Add inline method documentation for PromisedWebDriver.
Update dojo2-core dependency. Fixes #59.
Add information for end-users to contributing guidelines

since they are linked from the new issue page.
Merge branch 'master' of https://github.com/theintern/intern
Reordering Test.finishRun to ensure that the promise is always resolved
Adding test to demonstrate issue whereby subsequent tests automatically fail (and do not run) when a previous test has failed