Added test framework and runner. Added Steam method to pull friends. [gh #5, #12]
Merge branch 'develop' of https://github.com/kowsheek/steam-app into kowsheek-develop

Conflicts:
	src/SteamApp/SteamApp.sln
	src/SteamApp/SteamApp/Properties/WMAppManifest.xml
	src/SteamApp/SteamApp/SteamApp.csproj
	src/SteamApp/SteamApp/packages.config