Updated all plugins that are non-forked. Added some new plugins.

Added update_plugins.py which can fetch new plugins from GitHub.

New plugins added: zencoding, vim-indent-object, taglist, nginx.vim
Updated documentation
Reverted back powerline
Reverted powerline version. Increased font size
Fixed some things in peaksea (regarding omni menu and folding in terminal mode). Optimized a bit colors for powerline
Ignore docs tags
Removed generated doc tags from git repo
Added two new plugins: vim-expand-region and vim-multiple-cursors.

They are both super useful. Read more on their GitHub pages for more info:
https://github.com/terryma/vim-expand-region
https://github.com/terryma/vim-multiple-cursors
Fixed a typo in documentation
Added a new maping to update_plugins.py
Revert overriding CTRL-A (instead we use CTRL+S)
Merge git://github.com/amix/vimrc
change
Conflicts:
	.gitignore
	README.md
	sources_forked/peaksea/colors/peaksea.vim
	sources_forked/vim-powerline/README.rst
	sources_forked/vim-powerline/autoload/Pl.vim
	sources_forked/vim-powerline/autoload/Pl/Colorscheme.vim
	sources_forked/vim-powerline/autoload/Pl/Hi.vim
	sources_forked/vim-powerline/autoload/Pl/Match.vim
	sources_forked/vim-powerline/autoload/Pl/Mod.vim
	sources_forked/vim-powerline/autoload/Pl/Parser.vim
	sources_forked/vim-powerline/autoload/Pl/Segment.vim
	sources_forked/vim-powerline/autoload/Pl/Theme.vim
	sources_forked/vim-powerline/autoload/Powerline/Colorschemes/default.vim
	sources_forked/vim-powerline/autoload/Powerline/Colorschemes/skwp.vim
	sources_forked/vim-powerline/autoload/Powerline/Functions.vim
	sources_forked/vim-powerline/autoload/Powerline/Functions/ft_man.vim
	sources_forked/vim-powerline/autoload/Powerline/Functions/fugitive.vim
	sources_forked/vim-powerline/autoload/Powerline/Functions/hgrev.vim
	sources_forked/vim-powerline/autoload/Powerline/Functions/syntastic.vim
	sources_forked/vim-powerline/autoload/Powerline/Matches.vim
	sources_forked/vim-powerline/autoload/Powerline/Segments.vim
	sources_forked/vim-powerline/autoload/Powerline/Segments/ctrlp.vim
	sources_forked/vim-powerline/autoload/Powerline/Segments/ft_man.vim
	sources_forked/vim-powerline/autoload/Powerline/Segments/fugitive.vim
	sources_forked/vim-powerline/autoload/Powerline/Segments/hgrev.vim
	sources_forked/vim-powerline/autoload/Powerline/Segments/rvm.vim
	sources_forked/vim-powerline/autoload/Powerline/Segments/syntastic.vim
	sources_forked/vim-powerline/autoload/Powerline/Segments/tagbar.vim
	sources_forked/vim-powerline/autoload/Powerline/Segments/virtualenv.vim
	sources_forked/vim-powerline/autoload/Powerline/Themes/default.vim
	sources_forked/vim-powerline/autoload/Powerline/Themes/skwp.vim
	sources_forked/vim-powerline/doc/Powerline.txt
	sources_forked/vim-powerline/fontpatcher/PowerlineSymbols.sfd
	sources_forked/vim-powerline/fontpatcher/README.rst
	sources_forked/vim-powerline/fontpatcher/fontpatcher
	sources_forked/vim-powerline/plugin/Powerline.vim
	sources_non_forked/ack.vim/README.md
	sources_non_forked/ack.vim/doc/ack.txt
	sources_non_forked/ack.vim/plugin/ack.vim
	sources_non_forked/bufexplorer/doc/bufexplorer.txt
	sources_non_forked/bufexplorer/plugin/bufexplorer.vim
	sources_non_forked/ctrlp.vim/autoload/ctrlp.vim
	sources_non_forked/ctrlp.vim/autoload/ctrlp/buffertag.vim
	sources_non_forked/ctrlp.vim/autoload/ctrlp/changes.vim
	sources_non_forked/ctrlp.vim/autoload/ctrlp/dir.vim
	sources_non_forked/ctrlp.vim/autoload/ctrlp/line.vim
	sources_non_forked/ctrlp.vim/autoload/ctrlp/mixed.vim
	sources_non_forked/ctrlp.vim/autoload/ctrlp/mrufiles.vim
	sources_non_forked/ctrlp.vim/autoload/ctrlp/quickfix.vim
	sources_non_forked/ctrlp.vim/autoload/ctrlp/rtscript.vim
	sources_non_forked/ctrlp.vim/autoload/ctrlp/tag.vim
	sources_non_forked/ctrlp.vim/autoload/ctrlp/utils.vim
	sources_non_forked/ctrlp.vim/doc/ctrlp.txt
	sources_non_forked/ctrlp.vim/plugin/ctrlp.vim
	sources_non_forked/ctrlp.vim/readme.md
	sources_non_forked/nerdtree/README.markdown
	sources_non_forked/nerdtree/doc/NERD_tree.txt
	sources_non_forked/nerdtree/nerdtree_plugin/fs_menu.vim
	sources_non_forked/nerdtree/plugin/NERD_tree.vim
	sources_non_forked/tlib/autoload/tlib/Filter_cnf.vim
	sources_non_forked/tlib/autoload/tlib/Filter_cnfd.vim
	sources_non_forked/tlib/autoload/tlib/Filter_fuzzy.vim
	sources_non_forked/tlib/autoload/tlib/World.vim
	sources_non_forked/tlib/autoload/tlib/agent.vim
	sources_non_forked/tlib/autoload/tlib/buffer.vim
	sources_non_forked/tlib/autoload/tlib/cache.vim
	sources_non_forked/tlib/autoload/tlib/cmd.vim
	sources_non_forked/tlib/autoload/tlib/file.vim
	sources_non_forked/tlib/autoload/tlib/input.vim
	sources_non_forked/tlib/autoload/tlib/notify.vim
	sources_non_forked/tlib/autoload/tlib/scratch.vim
	sources_non_forked/tlib/autoload/tlib/tag.vim
	sources_non_forked/tlib/autoload/tlib/vim.vim
	sources_non_forked/tlib/doc/tlib.txt
	sources_non_forked/tlib/plugin/02tlib.vim
	sources_non_forked/vim-coffee-script/Readme.md
	sources_non_forked/vim-coffee-script/compiler/coffee.vim
	sources_non_forked/vim-coffee-script/ftdetect/coffee.vim
	sources_non_forked/vim-less/ftplugin/less.vim
	sources_non_forked/vim-less/syntax/less.vim
	sources_non_forked/vim-markdown/syntax/markdown.vim
	sources_non_forked/vim-snipmate/README.rst
	sources_non_forked/vim-snipmate/addon-info.json
	sources_non_forked/vim-snipmate/after/plugin/snipMate.vim
	sources_non_forked/vim-snipmate/autoload/snipMate.vim
	sources_non_forked/vim-snipmate/doc/snipMate.txt
	sources_non_forked/vim-snipmate/plugin/snipMate.vim
	sources_non_forked/vim-snippets/AUTHORS
	sources_non_forked/vim-snippets/LICENSE
	sources_non_forked/vim-snippets/addon-info.json
	sources_non_forked/vim-snippets/snippets/_.snippets
	sources_non_forked/vim-snippets/snippets/actionscript.snippets
	sources_non_forked/vim-snippets/snippets/apache.snippets
	sources_non_forked/vim-snippets/snippets/autoit.snippets
	sources_non_forked/vim-snippets/snippets/c.snippets
	sources_non_forked/vim-snippets/snippets/chef.snippets
	sources_non_forked/vim-snippets/snippets/clojure.snippets
	sources_non_forked/vim-snippets/snippets/cmake.snippets
	sources_non_forked/vim-snippets/snippets/coffee.snippets
	sources_non_forked/vim-snippets/snippets/cs.snippets
	sources_non_forked/vim-snippets/snippets/css.snippets
	sources_non_forked/vim-snippets/snippets/dart.snippets
	sources_non_forked/vim-snippets/snippets/diff.snippets
	sources_non_forked/vim-snippets/snippets/django.snippets
	sources_non_forked/vim-snippets/snippets/erlang.snippets
	sources_non_forked/vim-snippets/snippets/eruby.snippets
	sources_non_forked/vim-snippets/snippets/falcon.snippets
	sources_non_forked/vim-snippets/snippets/go.snippets
	sources_non_forked/vim-snippets/snippets/haml.snippets
	sources_non_forked/vim-snippets/snippets/haskell.snippets
	sources_non_forked/vim-snippets/snippets/html.snippets
	sources_non_forked/vim-snippets/snippets/htmldjango.snippets
	sources_non_forked/vim-snippets/snippets/htmltornado.snippets
	sources_non_forked/vim-snippets/snippets/java.snippets
	sources_non_forked/vim-snippets/snippets/javascript-jquery.snippets
	sources_non_forked/vim-snippets/snippets/javascript.snippets
	sources_non_forked/vim-snippets/snippets/jsp.snippets
	sources_non_forked/vim-snippets/snippets/lua.snippets
	sources_non_forked/vim-snippets/snippets/make.snippets
	sources_non_forked/vim-snippets/snippets/mako.snippets
	sources_non_forked/vim-snippets/snippets/markdown.snippets
	sources_non_forked/vim-snippets/snippets/objc.snippets
	sources_non_forked/vim-snippets/snippets/perl.snippets
	sources_non_forked/vim-snippets/snippets/php.snippets
	sources_non_forked/vim-snippets/snippets/po.snippets
	sources_non_forked/vim-snippets/snippets/processing.snippets
	sources_non_forked/vim-snippets/snippets/progress.snippets
	sources_non_forked/vim-snippets/snippets/puppet.snippets
	sources_non_forked/vim-snippets/snippets/python.snippets
	sources_non_forked/vim-snippets/snippets/r.snippets
	sources_non_forked/vim-snippets/snippets/rst.snippets
	sources_non_forked/vim-snippets/snippets/ruby.snippets
	sources_non_forked/vim-snippets/snippets/snippets.snippets
	sources_non_forked/vim-snippets/snippets/tcl.snippets
	sources_non_forked/vim-snippets/snippets/tex.snippets
	sources_non_forked/vim-snippets/snippets/textile.snippets
	sources_non_forked/vim-snippets/snippets/vim.snippets
	sources_non_forked/vim-snippets/snippets/xslt.snippets
	sources_non_forked/vim-snippets/snippets/zsh.snippets
	sources_non_forked/vim-surround/doc/surround.txt
	sources_non_forked/vim-surround/plugin/surround.vim
	vimrcs/basic.vim
	vimrcs/extended.vim