refs #77 add test for $type
closes #77 handle some types
Merge branch 'master' into issue77
add test for $type 3
Merge branch 'master' into issue77

Conflicts:
	src/main/java/com/foursquare/fongo/impl/ExpressionParser.java
Merge branch 'issue77' of git://github.com/twillouer/fongo into twillouer-issue77

Conflicts:
	src/test/java/com/foursquare/fongo/FongoTest.java