Created cask for mosh

Adding a cask for mosh (http://mosh.mit.edu/)
Merge branch 'master' of https://github.com/phinze/homebrew-cask

* 'master' of https://github.com/phinze/homebrew-cask:
  Android Studio 0.4.2 build 133.970939
  moved league of legends to Casks dir
  node-webkit 0.8.4
  add milkytracker
  Prepend brew-cask dirs to $LOAD_PATH (not append)