Made README clearer
Made README clearer

Includes grammar changes, and makes compiling clearer.
dentmaged/Cardinal-Dev,Electroid/ExperimentalPGM,dentmaged/CardinalPGM,dentmaged/Cardinal-Dev,dentmaged/Cardinal-Plus,dentmaged/Cardinal-Plus,Alan736/NotCardinalPGM,twizmwazin/CardinalPGM,Aaron1011/CardinalPGM,TheMolkaPL/CardinalPGM,dentmaged/CardinalPGM,iPGz/CardinalPGM,CaptainElliott/CardinalPGM,angelitorb99/CardinalPGM,TheMolkaPL/CardinalPGM,Alan736/NotCardinalPGM,Electroid/ExperimentalPGM,SungMatt/CardinalPGM,Pablete1234/CardinalPGM