FIX ERRORS: CheckType.java - commented out doesn't make any sense to me and throws errors left and right
FIX ERRORS: Scope.java changed "return this." to "return this.get(name);" what were you trying to return??
FIX ERRORS:TTGrammarEvaluator.g use scope.get not .getSymbol  checktype use boolean not BOOL comment out expression semantic rules for now they don't work
Merge branch 'master' of https://github.com/mymichellle/TT

Conflicts:
	TTInterpreter/src/columbia/plt/tt/CheckType.java
	TTInterpreter/src/columbia/plt/tt/interpreter/Scope.java