chore: add jQuery dependency, remove test-util.js
chore(): fix bower path for jquery
docs(material-radio-button): Input focus, ARIA
docs(material-radio-button): Add Constants config
doc(material-radio-button): Operates with arrows

Fixes #179
docs(material-radio-button): Controller refactor
docs(material-radio-button): Constants refactor
docs(material-radio-button): Arrow key testing