Add modified gruntfile.js and tasks

tasks/options/copy.js

@@ -0,0 +1,21 @@
+// copy
+module.exports = function(config) {
+    return {
+        dev: {
+            files: [{
+                expand: true,
+                cwd: './assets',
+                src: ['**/*.!(coffee|jade)'],
+                dest: '.tmp/public'
+            }]
+        },
+        build: {
+            files: [{
+                expand: true,
+                cwd: '.tmp/public',
+                src: ['**/*'],
+                dest: 'www'
+            }]
+        }
+    };
+};