Do not install brew
Remove '..' alias.

- cd ..; cd ../..; cd ../../..; cd ../../../.. are aliased by
  default on zsh to ..; ...; ....; ..... respectively.
Use vim instead of vi.

- vi command uses vim that comes with the system instead of the one of MacVim.
Delete yuv alias, as asked by the comment.
Removing duplicated vim plugins
Install homebrew only if it's not in the path already.
Follow code style.
updated vim nerdtree tabs plugin
Merge pull request #242 from szajbus/skwp

updated vim nerdtree tabs plugin
Merge pull request #239 from lfilho/master

Removing duplicated vim plugins
Merge pull request #237 from rafaelregis/aliases_cleanup

Aliases cleanup
Merge pull request #241 from calavera/skip-homebrew-install

Skip homebrew install if it's already in the path
Revert "Add quickfixsigns module - shows which lines changed"

This reverts commit ae8946dbb2b45c6086b0d7615e10fd8656a7d4d6.
Remove unused submodules directories.

Running `rake install`, runs the `:submodule_init` task,
which in turn runs the following command:

    git submodule update --init --recursive

This fails with the following couple of errors (separately):

    No submodule mapping found in .gitmodules for path 'vim/bundle/mattn-zencoding-vim'
    No submodule mapping found in .gitmodules for path 'vim/bundle/skwp-vim-indexed-search'

This was introduced by 3d60f721dd53e7f5414d11004c749784efc74f64
which removed the 'mattn/zencoding-vim' and 'skwp/vim-indexed-search'
submodules from the `.gitmodules`.
Merge pull request #243 from gonzedge/submodules-init

Remove unused submodules directories.
Vim plugins and prezto updated
Improved sass colors
Remove arpeggio; unused
Added vim-gitgutter, which shows git diff in the gutter
Upgrade plugins