v0.12.0

Feature

• Rewrite sample app to illustrate classic case (directive, service, constants)
• Sample app follows john-papa-style-guide
• Update dependencies (generator and sample app)
• Update yeoman-generator to v0.21
• Add AngularJS v1.4 && drop AngularJS v1.2
• Improve styles files workflow
• Allow args with gulp protractor #555
• Replace home made proxy by http-proxy-middleware #593

Bug fix

• Fix injection wiredep option #480
• Fix karma conf #499 #509
• Fix dist with empty folder #589
• Fix reuse vars/mixins in stylesPreprocessor #596