FIx errors in vim after following YCM's README on OS X

    E254: Cannot allocate color White
    E254: Cannot allocate color Black
    Error detected while processing /Users/rick/.vimrc:
    line  15:
    E484: Can't open file /usr/local/bin/vim/runtime/syntax/syntax.vim

I got those errors when trying to use `MacVim.app/Contents/MacOS/Vim` directly. Apparently, the correct method is to use `mvim -v`. You can alias `vim` to it.

More info for MacVim + vim + OS X: http://stackoverflow.com/a/5679658/195864