added nerd commenter and cscope repositories
Added minor search tweaks to fix handicaps that are default in vim
Updated docs and gitignore
fixed HTML plugin
added mediawiki syntax and ft-plugin for wiki editing
A few important changes

1) Added XML as submodule
2) Fixed syntax-based indent and removed case-insensitive search by
default
3) Added BASH-style tab completion by default
updated submodule plugins
Switched all submodules to git protocol to bypass ssh blocks
improved python and vim-fugitive
Added URDF as xml format
Merge pull request #1 from robEllenberg/master

Updates