- Added support for inner classes
	* 	now it is possible to set the class to mutate with <MainClass>($<InnerClass>)*
	* 	if the same method is defined in several classes inside a Java source file then
		only the method defined in the specified class will be mutate.

- Added tests for the support of inner classes
	*	more tests are needed (specially for anonymous classes)

- Improved the documentation for some classes
	*	more improvements will be made in future commits