HUB-340 : Removed builders and structures of hAck hMeasure hAlert hConvState
HUB-148 : Added json-schema to validate the topology and hMessage structures
HUB-148 : implement json-schema for the topology and the hMessage
Merge remote-tracking branch 'upstream/master'

Conflicts:
	lib/hubiquitus.coffee
	test/hEcho.coffee
HUB-148 : Update the json schema. replace the lib by tv4
HUB-148 : resolve error in test
HUB-148 : resolve test errors
HUB-148 : resolve test error final !!
Merge pull request #69 from MartinBieth/master

Implement json-schema and remove builders