Merge branch 'release-1.1' into dev

- Added Mac OS X support
Update install.sh: clearing ~/.vim keeps bundle dir

I changed the "Clearing out ~/.vim" section to delete everything in
~/.vim EXCEPT for the bundle folder. This prevents re-installation of all
plugins every time you run the install script.
Update install.sh: now backs up ~/.vim

Signed-off-by: Michael LeCompte <michaelslec98@gmail.com>
Update install.sh: add pacman support

Signed-off-by: Michael LeCompte <michaelslec98@gmail.com>
Merge branch 'hotfix-1.1.1' into dev

- Fix install crash because of Vundle update
Update install.sh: remove several unnecessary uses of "sudo"

Signed-off-by: Michael LeCompte <michaelslec98@gmail.com>
Update README.md: add currently supported OS's to Compatibility section
Update README.md: add current default color scheme
Fix vimrc: change google-chrome to google-chrome-beta
Update README.md: add "A Quick Note" section
Update vimrc: replace Vundle.vim with vim-plug

Signed-off-by: Michael LeCompte <michaelslec98@gmail.com>
Update install.sh: add vim-plug compatability
Update vimrc: change plugins to vim-plug syntax
Update vimrc: add post-install commands for YouCompleteMe & vimproc

Vim-plug adds a feature that allows you to execute commands in
specific plugin directories to aid in the installation of plugins. I
added two of these such commands to YouCompleteMe and vimproc as they
both require post-download installation steps.
Update install.sh: remove ycm and vimproc sections
Update install.sh: update for vim-plug syntax
fix vimrc: YouCompleteMe post-update hook command

I changed the post-update hook command for the YouCompleteMe plug-in
from ./install --clang-completer to ./install.sh --clang-completer.
Update install.sh: change pacman vim package to gvim

Signed-off-by: Michael LeCompte <michaelslec98@gmail.com>
Update vimrc: replace Vundle.vim with vim-plug

Signed-off-by: Michael LeCompte <michaelslec98@gmail.com>
Update install.sh: add vim-plug compatability