Bump jQuery version to 2.1.0
Merge branch 'release/1.5.6'

Conflicts:
	js/jquery.js
Merge branch 'release/1.5.6'

Conflicts:
	js/jquery.js
Merge branch 'master' of github.com:AllMangasReader-dev/AMR

Conflicts:
	js/jquery.js
Bump version to 1.5.7
Merge branch 'release/1.5.7'
Merge tag '1.5.7' into develop

      removed all duplicated instances of getMangaMirror()
      Renamed getMangaMirror to getMirrorScript in back.js
      Adding travis testing YAML file
      Adding npm package.json
      Removing node 0.6 version
      Added badge to the readme
      Added chrome.notifications test page
      Disables new mirrors notifications, for the moment
      Replaced all extension.on/sendRequest for runtime.on/sendMessage
      Refactored if statements in the onMessage listener
      Removed old API