Update to Play Framework 2.2

Update scala version to 2.10.2
Update play version to 2.2.0
Update scala-plugin to 3.1.6
Add routes-compiler and template-compiler dependencies
Update TemplateCompiler generated imports and compiler invocation
Update mojos to use annotations
Update RouteCompiler imports
Make RouteCompiler look for submodules style routes (xxx.routes)
Update StaticDevApplication to compile (need test)
Amend test maven project
Update documentation
Merge pull request #7 from guidograzioli/master

Update to play! framework 2.2.0