Initial commit
first version
Update README.md
Update README.md
changed ctor to allow passing in api key
fixed null reference on principal
Merge branch 'master' of https://github.com/WebApiContrib/WebApiContrib.Logging.Raygun

Conflicts:
	src/WebApiContrib.Logging.Raygun/RaygunExceptionLogger.cs
	src/WebApiContrib.Logging.Raygun/WebApiRaygunEnvironmentMessage.cs