Added cask for the Dropbox Forum Build.
Deleted dropbox-forum-build--moving to personal repo.
Re-add dropbox-forum-build cask.
Removed checksum for FirefoxAurora.
Updated iTerm2 to download the nightly build.
Merge branch 'master' of https://github.com/phinze/homebrew-cask
Merge branch 'master' of https://github.com/phinze/homebrew-cask
Merge branch 'master' of https://github.com/phinze/homebrew-cask
Merge branch 'master' of https://github.com/phinze/homebrew-cask
Merge branch 'master' of https://github.com/phinze/homebrew-cask
Merge branch 'master' of https://github.com/phinze/homebrew-cask

Conflicts:
	Casks/firefox-aurora.rb
Merge branch 'master' of https://github.com/phinze/homebrew-cask
Created iTerm2 nightly cask.