Update arduino_md03_v_5_0.ino

Removed LCD...
Update arduino_md03_v_5_0.ino

Added a debug option to remove the LCD updates and speed up the main loop
Update arduino_md03_v_5_0.ino

Changed headder
Update arduino_md03_v_5_0.ino

modified dbug code
Update arduino_md03_v_5_0.ino

Modified dbug code, again...
Update arduino_md03_v_5_0.ino

added pin for batt meter
Convert to uising ifdef

Want compile time removal of the debug code.
Merge branch 'master' into patch-1