Removed unittests, added kill process kw, doc fix

Documentation removed due to full wiki page
Every keyword returns value (almost all returns True if succeed)
	modified:   rxconnector.py
	deleted:    unit_tests/__init__.py
	deleted:    unit_tests/rxconnector_test.py

Added new test of connector, 2new keywords

	deleted:    example/HelperModule.py
	new file:   example/connector_test.robot
	deleted:    example/example.robot
	modified:   src/rxconnector.py

Check of check/uncheck functions

	renamed:    src/b.bat -> example/EchoInput.bat
	renamed:    src/a.bat -> example/EchoOnly.bat
	modified:   example/example.robot
	modified:   src/rxconnector.py