avoid exit code with no Casks are installed

and no argument is give to `brew cask list`.  Fixes #3881.
Add Cryptol
Adapt to homebrew's move of the tap directory

Closes #4035. Closes #4029. Closes #4026.
Merge pull request #4039 from rolandwalker/empty_list_exit_code

avoid exit code with no Casks are installed
Merge pull request #4046 from ndr-qef/cryptol

Add Cryptol
Merge pull request #4042 from rolandwalker/tap_location_change

Adapt to homebrew's move of the tap directory
cut v0.33.0
Fix version of ccleaner cask
Use new taps directory structure in documentation

Replace /Library/Taps/phinze-cask/ by /Library/Taps/phinze/homebrew-cask/
Upgrade P4Merge to v2014.1
Merge pull request #4059 from jcgay/p4merge

Upgrade P4Merge to v2014.1
UninstallPkg 1.0.5
- Update UninstallPkg 1.0 -> 1.0.5
Merge pull request #4061 from hanxue/uninstallpkg

UninstallPkg 1.0.5
MiniLyrics

Add uninstall script
Update to the latest url for hipchat
Keymo 1.2.0
Remove ISSUES_URL from cli commands

When user run `brew cask` it will list all commands out.
There is a blank help command call issues_url which caused by the newly
introduced constant from #2971
Black Light 2.0
Virtaal 0.7.1b2
Poedit 1.6.4b2569
- Update to latest Mac release build 2569 available since 27 Feb 2014