Add cli with flags. URL now customizable

cli.js

@@ -0,0 +1,39 @@
+#!/usr/bin/env node
+/**
+ * Copyright 2016 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+'use strict';
+
+var chalk = require('chalk');
+var meow = require('meow');
+var lighthouse = require('./');
+
+var cli = meow({
+  pkg: './package.json',
+  help: [
+    'Options',
+    '  --help          Show this help',
+    '  --version       Current version of package',
+    '',
+    'Usage',
+    '  lighthouse [url]'
+  ]
+})
+
+lighthouse({
+  url: cli.input[0],
+  flags: cli.flags
+});

index.js

@@ -15,7 +15,7 @@
  */
 'use strict';
 
-const url = 'https://voice-memos.appspot.com';
+const defaultUrl = 'https://voice-memos.appspot.com';
 const ChromeProtocol = require('./helpers/browser/driver');
 
 const Auditor = require('./auditor');
@@ -46,13 +46,16 @@ const audits = [
   require('./audits/manifest/start-url')
 ];
 
-gatherer
-    .gather(gatherers, {url, driver})
-    .then(artifacts => auditor.audit(artifacts, audits))
-    .then(results => {
-      console.log(results);
-    }).catch(function(err) {
-      console.log('error encountered', err);
-      console.log(err.stack);
-      throw err;
-    });
+module.exports = function(opts) {
+  var url = opts.url || defaultUrl;
+  gatherer
+      .gather(gatherers, {url, driver})
+      .then(artifacts => auditor.audit(artifacts, audits))
+      .then(results => {
+        console.log(results);
+      }).catch(function(err) {
+        console.log('error encountered', err);
+        console.log(err.stack);
+        throw err;
+      });
+}

package.json

@@ -3,6 +3,9 @@
   "version": "1.0.0",
   "description": "",
   "main": "index.js",
+  "bin": {
+    "lighthouse": "cli.js"
+  },
   "directories": {
     "test": "tests"
   },
@@ -27,10 +30,12 @@
   },
   "homepage": "https://github.com/googlechrome/big-rig#readme",
   "dependencies": {
+    "chalk": "^1.1.1",
     "chrome-devtools-frontend": "1.0.381789",
     "chrome-remote-interface": "^0.11.0",
     "devtools-timeline-model": "1.0.16",
     "file": "^0.2.2",
+    "meow": "^3.7.0",
     "traceviewer": "^1.0.8"
   },
   "devDependencies": {