Merge branch 'develop'

* develop:
  1.11.2
  Updates to examples, MIT licence, and documentation.
  Provide a parameter to disable color output, fixes #78.
  Add support for .apps installed outside /Applications, fixes #90.
  Add support for JPEGmini Lite (#67), JPEGmini Pro (#79), and OS X Yosemite (#89).
  Upgrade to pngquant 2.3.1 to access --skip-if-larger, refs #81.
  Move all checks for whether apps are installed to AppleScript.
  Fix git pre-commit hook, fixes #82.
  Remove extra / in path
  Fix JPEGmini Lite check
  Fix git pre-commit hook
  Too many arguments error, refs #67.
  Normalise inconsistencies between different releases of JPEGmini.
  Correct the bundle ID for JPEGmini, refs #67
Add pngquant to package.json.
1.11.3
Merge branch 'master' into develop

* master:
  1.11.3
  Add pngquant to package.json.
Amend JPEGmini Pro bundle id, refs #79.