Updates plugins

1) Removes
    Gist.vim
    ervandew/supertab
      this was causing my tab to autocomplete
2) Adds
    'skalnik/vim-vroom'
    'mattn/webapi-vim'
    'kana/vim-textobj-user'
    'nelstrom/vim-textobj-rubyblock'
    'bbommarito/vim-slim'
    'jpalardy/vim-slime'
    'puppetlabs/puppet-syntax-vim'
    'tsaleh/vim-matchit'
    'airblade/vim-gitgutter'
    'tpope/vim-haml'
    'kchmck/vim-coffee-script'
    'vim-scripts/VimClojure'
    'chrisbra/csv.vim'
    'tpope/vim-cucumber'