Make git ignore file mode changes
Add jump module to zprezto, improve symlinking to handle directories

Add:
 * The jump module to zprezto

Refactor:
 * Rakefile's display text (simplified it)

Fix:
 * Issue when dealing with symlinking directories, (only symlink non
   existent directories, and ignore any symlinked files)
Vim: Add AfterColors plugin to fix Vim-Signify

Add:
 * Vim's AfterColors
 * common.vim colors to fix vim-signify's vimdiff colour background
Vim: Improve textwidth/indention buffer options, vim-sleuth -> yaifa

Add:
 * Default buffer textwidth/indention settings
 * yaifa vim plugin to handle heuristically setting buffer options

Remove:
 * vim-sleuth in favour for yaifa
Vim: Set shell, speed up esc from insert, add vim-multiple-cursors

Add:
 * Set shell to bin/sh
 * Set to speed up ESC from insert mode
 * vim-multiple-cursors plugin