Add cabal_sandbox_info function

Reports whether the current working directory is within a
sandbox. Useful to check before installing Cabal packages into the
global registry.
Fix URL to gi (gitignore) function

Previous URL doesn't seem to work because the host requires a www
prefix.
Merge pull request #2542 from puffnfresh/gitignore-plugin-url

Fix URL to gi (gitignore) function
Update gitignore.plugin.zsh

Fix URL to gi (gitignore) function in _gitignireio_get_command_list function
Fix remaining broken URL in gitignore function
Merge pull request #2541 from puffnfresh/cabal-sandboxes-info

Add cabal_sandbox_info function
Adieu l'ami.

 @jimweirich -- You will be missed.
Merge pull request #2544 from fduch2k/patch-1

Update gitignore.plugin.zsh
Merge pull request #2548 from puffnfresh/gitignore-plugin-url

Fix remaining broken URL in gitignore function
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
updates to path for chef setup