Added Mixin.Net extension
Changed gitignore and MixinTool build folder
Fixed ide problems
Set up nuget packages, changes in test projects
Fixed adding pre and post build events
Code refactoring
Adjust namespaces
Adjust namespaces
Fixed test helpers
Changed tests names
Renamed unit tests
Huge refactoring due to problem with PCL
Replace BinaryExpression with AssignmentExpression
Fixed problem with generics
Added documentation and cleaned up code
Added missing files
Implemeted finding mixin definition, removed unused files