Fix built main.js ending up empty

Author: silvenon

app/USAGE

@@ -5,7 +5,7 @@ Options:
     Bootstrap: Include Bootstrap for Sass
 
 Example:
-    yo webapp [--coffee]
+    yo webapp
 
     This will create:
         Gruntfile.js: Configuration for the task runner.

app/templates/index.html

@@ -91,7 +91,7 @@ <h1>'Allo, 'Allo!</h1>
     <!-- endbuild -->
     <% } %>
 
-    <!-- build:js(.tmp/app) scripts/main.js -->
+    <!-- build:js scripts/main.js -->
     <script src="scripts/main.js"></script>
     <!-- endbuild -->