Don't disable Ack if ack-grep command is available

fixes #117
Configure Ack plugin to use ack-grep when that one is available
Merge pull request #494 from bagilevi/support-ack-grep

Don't disable Ack if ack-grep command is available
Add slim syntax
Use chrisbra's csv reposity (author copy)

closes #477
Merge pull request #498 from brunohenrique/master

Add Slim lang plugin
move setupWrapping into an autocmd on FileType
Merge pull request #499 from brow/markdown_wrapping

Markdown wrap settings are hard to override
Update all plugins
Merge branch 'master' of github.com:carlhuda/janus

* 'master' of github.com:carlhuda/janus:
  move setupWrapping into an autocmd on FileType
  Add slim syntax
Vimwiki: don't mess with .md or .markdown files

TODO: Vimwiki has this option by default and will probably be released
      soon, please revert when it's released

closes #479
change slim submodule url to https protocol.
Use a new version of ZoomWin

Thanks @johnhampton

refs #500
Merge pull request #502 from landtax/master

Slim submodule causes bad installation.
Add Erlang lang plugin
Reorganise .gitmodules
Support The Silver Searcher (ag) as ack replacement

https://github.com/ggreer/the_silver_searcher#vim
Update fugitive plugin.
Merge pull request #506 from vassilevsky/silver-searcher-support

Support The Silver Searcher (ag) as ack replacement
Merge pull request #507 from rdlugosz/update_fugitive_to_cf3fe781dd

Update fugitive plugin.