add async/await supported methods
upgrade opencover
Build the different platform versions of the API
Merge branch 'master' of https://github.com/MYOB-Technology/AccountRight_Live_API_.Net_SDK
Add SDK project checker (can be run with VS open :))
Merge pull request #2 from sawilde/master

Added .NET 3.5 and Async/Await for .NET4/4.5 and portable