v0.9.1

• feat(async): add support for async/await in client test project
• chore(deps): drop .NET Framework 3.5 support, upgrade to .NET 4.5

Internals:

• chore(tools): add Ruby specific binaries and instructions
• chore(deps): explicitly add RhinoMocks to packages
• chore(deps): upgrade to NUnit 2.6.4 to handle async code
• chore(deps): upgrade to Mono.Cecil 0.9.6.1
• chore(solution): upgrade VB test project to Visual Studio 2013
• test(skipped): add reason to some skipped tests