Fix readme.md
Merge pull request #44 from rakoo/patch-1

Fix readme.md
Added groupBuddy event for presence stanzas sent from group chat
Updated readme.md
Merge pull request #45 from Inkp/master

Added groupBuddy event for presence stanzas sent from group chat
Added conference parameter to groupbuddy event. Updates to readme.md
Merge pull request #46 from Inkp/master

Added conference parameter to groupbuddy event.
release v0.1.19
Only ensure socket keep alive if socket exists

This is irrelevant if you're connecting via WebSockets, and causes an
error.
Emit data from new connection to the callback.

This allows the callback function to get access to the JID data.
Show that online cb gets passed the data object
Merge pull request #48 from jackfranklin/master

Couple of minor tweaks
Merge remote-tracking branch 'upstream/master'