-Adding first cut of lasershark_stdin app, an app that reads commands via stdin to control a lasershark unit.
-Added lasershark_stdin_circlemaker code, an app intended to be piped to lasershark_stdin in order to draw a circle.
-Added lasershark_stdin_input_example.txt file intended to be piped to lasershark_stdin that explains the different command options lasershark_stdin accepts.
Updating makefile so it doesn't fail when a clean is performed and one of the executables is missing