Documented many Physics2D* classes

servers/physics_2d_server.cpp

@@ -646,6 +646,14 @@ void Physics2DServer::_bind_methods() {
 //	ObjectTypeDB::bind_method(_MD("sync"),&Physics2DServer::sync);
 	//ObjectTypeDB::bind_method(_MD("flush_queries"),&Physics2DServer::flush_queries);
 
+	BIND_CONSTANT( SPACE_PARAM_CONTACT_RECYCLE_RADIUS );
+	BIND_CONSTANT( SPACE_PARAM_CONTACT_MAX_SEPARATION );
+	BIND_CONSTANT( SPACE_PARAM_BODY_MAX_ALLOWED_PENETRATION );
+	BIND_CONSTANT( SPACE_PARAM_BODY_LINEAR_VELOCITY_SLEEP_TRESHOLD );
+	BIND_CONSTANT( SPACE_PARAM_BODY_ANGULAR_VELOCITY_SLEEP_TRESHOLD );
+	BIND_CONSTANT( SPACE_PARAM_BODY_TIME_TO_SLEEP );
+	BIND_CONSTANT( SPACE_PARAM_CONSTRAINT_DEFAULT_BIAS );
+
 	BIND_CONSTANT( SHAPE_LINE );
 	BIND_CONSTANT( SHAPE_SEGMENT );
 	BIND_CONSTANT( SHAPE_CIRCLE );