added repositories and interfaces and science!
Merge branch 'master' of https://github.com/jdehlin/Twitta
Merge branch 'master' of https://github.com/jdehlin/Twitta

Conflicts:
	Source/Twitta.Website/Twitta.Website.csproj

added model references to repositories
Merge branch 'master' of https://github.com/jdehlin/Twitta