Fixes for return statement, make Evaluate function on script return value

src/Script.cpp

@@ -20,8 +20,8 @@ Script::Script() {
     _scriptVariables = new unordered_map<size_t, shared_ptr<EvalValue>>(0);
 }
 
-void Script::Evaluate() {
-    _evaluator->Evaluate(_boundScript);
+EvalValue* Script::Evaluate() {
+    return _evaluator->Evaluate(_boundScript);
 }
 
 Script::~Script() {