Merge pull request #2 from dapetcu21/master

Phonegap integration
Update readme.md
Update readme.md
Update readme.md.
Merge pull request #3 from dapetcu21/master

Cordova shim
Remove app.manifest reference from index.jade
Merge branch 'master' of https://github.com/readfwd/delta-app
Remove cordova test code.
Hopefully fix coveralls for main travis branch.
Replaced cordova with crosswalk for Android
Update readme.md [skip ci]
Commited cordova's node_modules to VC
Add istanbul ignores for cordova mobile code.
Merge branch 'master' of https://github.com/readfwd/delta-app
Added build-deps script for CrossWalk
Merge branch 'master' of github.com:readfwd/delta-app
Updated readme.md