Updated Polycode templates' Update() to add rendering

Assets/Templates/C++/Linux/HelloPolycodeApp.cpp

@@ -17,5 +17,5 @@ HelloPolycodeApp::~HelloPolycodeApp() {
 }
 
 bool HelloPolycodeApp::Update() {
-    return core->Update();
+    return core->updateAndRender();
 }

Assets/Templates/C++/Windows/PolycodeTemplateApp.cpp

@@ -12,5 +12,5 @@ PolycodeTemplateApp::~PolycodeTemplateApp() {
 }
 
 bool PolycodeTemplateApp::Update() {
-	return core->Update();
+	return core->updateAndRender();
 }

Assets/Templates/C++/Xcode/PolycodeTemplate/PolycodeTemplateApp.mm

@@ -18,5 +18,5 @@ PolycodeTemplateApp::~PolycodeTemplateApp() {
 }
 
 bool PolycodeTemplateApp::Update() {
-    return core->Update();
+    return core->updateAndRender();
 }