Added properties to channel to allow simple matching on request body.
Merge branch 'master' into msg-content-matching

Conflicts:
	package.json
Added more thorough unit testing for the http body matching.
Added integration test for channel matching logic. Added the ability to match on content-type.
Merge pull request #99 from jembi/msg-content-matching

Message content matching
Merge branch 'master' of https://github.com/jembi/openhim-core-js into error-alerts

Conflicts:
	src/model/channels.coffee
	test/integration/e2eIntegrationTests.coffee