vim: big cleanup & plugin additions
vim: big cleanup & plugin additions

After weeks delaying these changes... Here it comes:

 - More descriptive commentaries
 - Simpler structure
 - Sections and subsections

 - Plugin additions
   * `vim-hub-neovim-rpc`
   * `nvim-yarp`
   * `deoplete-jedi`
   * `nerdtree-git-plugin`
   * `vim-fugitive`

 - Plugin removals:
   * `vim-live-latex-preview`
   * `git-vim`
   * `jedi-vim`

caianrais/dotfiles,caianrais/dotfiles