add itunes function to control itnues from the terminal
Merge pull request #2174 from oxnz/master

plugins/osx/osx.plugin.zsh: add itunes function to control itnues from the terminal
local customizations

adding rvm and alias to zshrc, updated zshrc for bin path and java_home, added rvm load function to zshrc
added git rebase shortcut

remake bin path for powerline scripts
set vim as default editor
remove path to powerline executable
remove md5 checksum alias