Add reconnect attempts

[elmarti]

As discovered in #46, the example app never seems to connect first time, but often does after a few tries. The previous Blaze specific version of the application used to reconnect when the ICEConnectionState was failed, which seemed to work most of the time and this should be repeated for this version.

Acceptance criteria

• Developer can specify number of retry attempts before failing the call.
• When Ice fails it should start the calling process over again until it has done it X amount of times.