Merge pull request #4 from klesta490/master

Mouse enter+leave
Start of router plugin. Events virtualization prefer Window over Body.
Merge branch 'master' of https://github.com/Bobris/Bobril
Router: links now have active class when active
Fixed IE8 bugs in tests. Improved build process.
Added support for string in attrs.style additionally to object.
More advanced features for Router and more complex sample. New b.assign method.
Forgotten csproj