Added support for external unit tests with junit, mockito
Changed main IAccessor interface
Removed accessor resolvers
PropertyHelper is now ReflectionHelper
Removed class type from converter parameters
Added chain of responsibility interface and base class for accessors
Refactored accessor classes according to new method signature
Added new unit tests
Removed unused classes
Added token visitor and acceptor interfaces
Tokens now are visitable
BindingParser now has its own interface
Added unit tests
Merge branch 'feature/token_visitor' into develop
Merge branch 'feature/accessors' into develop