Adding in extra detail as per the teamcity spec for suites

Also include the expected / actual results

And reference http://confluence.jetbrains.com/display/TCD7/Build+Script+Interaction+with+TeamCity#BuildScriptInteractionwithTeamCity-ReportingTests for standards

Meant to get round to removing teamcity reporter from mocha but didnt get round to it and see you have, thanks! Here's the improvements added to the mocha one - tested with an install of teamcity and all seems to work

Will leave it up to you to change package.json and README.md if you want to include this