Added HOW TO PLAY INFO

Added HOW TO PLAY INFO:
INFO: Search with the Binoculars for Anomalies. They can be hidden, either as a captured Observer or in the environment. Keep an eye on the details. This is NOT an easy task. If you find nothing and believe "all is good," press Space so all captured Observers will walk back to HQ. If the Green Light glows up at HQ, you did it right... If it's Red, have a guess... Use the E key to fast forward after making your Target Report, so you don't need to wait as long for them to return to HQ. You also have Night Vision available with the Q key; use it to gain an advantage during dark nights, as some anomalies are only visible with Night Vision. You're gonna make it!