Added a bunch of plugins and updated my .vimrc

Changes to be committed:
        modified:   .vimrc
        new file:   autoload/pathogen.vim
        new file:   autoload/youcompleteme.vim
        new file:   bundle/nerdtree
        new file:   bundle/vim-easymotion
        new file:   doc/NERD_commenter.txt
        new file:   doc/bufexplorer.txt
        new file:   doc/matchit.txt
        modified:   doc/tags
        new file:   doc/youcompleteme.txt
        new file:   plugin/NERD_commenter.vim
        new file:   plugin/bufexplorer.vim
        new file:   plugin/matchit.vim
        new file:   plugin/youcompleteme.vim
        new file:   tags