Issue #5: OnException support
Documented the OnException handler
Use passive tone in documentation
Updated setup scripts for the rake build environment
Build now outputs XML documentation files. Also added to NuGet package

Fixes issue #6
Merge branch 'varkkjuh-issue5_onexception' into develop
Issue #7: Expose ChannelFactory for WCF extensibility features
Add documentation for ChannelFactory
Merge branch 'varkkjuh-issue7_channelfactory' into develop

Conflicts:
	README.md
	source/WcfClientProxyGenerator.Tests/ProxyTests.cs
	source/WcfClientProxyGenerator/IProxyConfigurator.cs
	source/WcfClientProxyGenerator/RetryingWcfActionInvokerProvider.cs
Incrementing version