explainer: Expand the "what about Web Intents" section.
explainer: Expand the "what about Web Intents" section.

Now covers other intents systems.

benfredwells/ballista,chromium/ballista,benfredwells/ballista,mgiuca/ballista,addyosmani/ballista,mgiuca/ballista,addyosmani/ballista,chromium/ballista