Change coveralls badge style
Add logo
Change the way to invoke the native bridge

Changing location.href so fast causes a problem.
We need to use iframes to invoke the native bridge.

cf. http://blog.techno-barje.fr/post/2010/10/06/UIWebView-secrets-part3-How-to-properly-call-ObjectiveC-from-Javascript/
Add npm script for doc
Add doc for v0.3.5
Bump to version v0.3.5