Make window loading more explicit

src/main.cpp

@@ -126,7 +126,7 @@ int mainFunc(int argc, char* argv[]) {
         return -2;
     }
 
-    cout << "Loading..." << endl;
+    cout << "Loading window..." << endl;
 
     // Load images passed via command line in the background prior to
     // creating our main application such that they are not stalled