added comment functionality for lexer, expanded tests, and updated to identify empty strings

simpleLiteralTest.a

@@ -1,9 +1,15 @@
-"this is a string" 721398 'g' '/n' 
-12893 "this is not a string
+"this is a string" 721398 'g' '/n' (* should print 3 tokens before this *)
+'
+' 
+12893 "this is not a string (*one valid token before this*)
+(* spacey comment here     
+over multiple lines
+will it work? *)
 "
 '''
 '\'
 false
+(**)
 '''
 nullfalse
 "nulltrue
@@ -21,6 +27,7 @@ true
 'n'
 '\'
 'fdsf'
+(*/jnewjno2893u86^ 	Lots of random characters /n /t '") *)
 '
 '
 '	'