Fix path used in GetAssemblyInformationalVersion

Release\Cassette.dll no longer exists, but Release\NET40\Cassette.dll does.
Allow control over references being added
Fixed serving of static files under IIS 6 / IIS 7 classic pipeline.
Use CompleteRequest instead of Response.End.
Use integrated pipeline mode for unit test
Merge branch 'iis-raw-files-bug' of git://github.com/PageUpPeopleOrg/cassette into PageUpPeopleOrg-iis-raw-files-bug
Merge branch 'patch-1' of git://github.com/Daniel15/cassette into Daniel15-patch-1
Support embedding SVG as data-URI in CSS
Cache bundle renderer type, not html. #365
URL modifier not used by deserializer
Add MSBuild task property AppVirtualPath
v2.1.0
Fix GitHub api auth