Merge pull request #2 from MarkTaylor/master

Strip down README.md
Add exported ping function.

The ping function allows the user to work out whether a hub is running
without attempting to register with it.
Add runWithConnection and onHubAvailability methods to Connector.

The runWithConnection method lets you do on-demand-only registration,
so there's no need for the register/unregister buttons.
onHubAvailability is a thin wrapper for the ping method which gives
you a hook for when the hub starts or stops.  This is not related
to whether the connector is actually registered, but in conjunction
with runWithConnection that is actually what you want.
add in-line documentation to samp.js
Reworked the broadcast example for the new, streamlined UI.
Merge pull request #3 from msdemlei/master

Update simple broadcast example to new API
Remove unused parameter from call