First hack at the test harness described in #213. Still missing auto-build of Glimpse packages, auto-build of test site, iis express support, iis support and auto nuget package updating.
Added IISExpress support to the test harness #213
Finalized integration testing harness as defined in #213

User will still have to manually configure IIS since scripts would have to have administrative privileges to configure it automatically.
Merge branch 'Integration_Harness' into System.Web.Abstraction to close #213