Added readme file and MPL v2 license
Cleaned up router unit tests
Completed unit test for router multicasting
Added a unit test to ensure an error is returned if there are multiple primary routes
Added support for forwarding PUT and POST requests
Added comments to the router component functions
Merge branch 'master' of https://github.com/jembi/openhim-core-js into switch-to-koa
Update the Readme file with details on getting the latest version of node for the Koa framework