Pig Ctags

First install ctags if you don't have it already.

    brew install ctags

Copy the ctags file in the repo to $HOME/.ctags

    cp ctags $HOME/.ctags

Install tagbar (for vim) from https://github.com/majutsushi/tagbar

Then add the below to your vimrc file

    nmap <F8> :TagbarToggle<CR>
    let g:tagbar_type_pig = {
        \ 'ctagstype' : 'pig',
        \ 'kinds' : [
     \ 'a:Alias',
            \ 's:Set',
            \ 'r:REGISTER',
            \ 'd:DEFINE'
     \]
    \}