Add experimental support for slimerjs.

Pass the --slimerjs flag to run yslow in slimerjs instead of phantomjs.
Closes #544

CHANGELOG

@@ -2,6 +2,7 @@ CHANGELOG sitespeed.io
 
 version 3.0.1
 ------------------------
+* Add experimental support for running yslow in [SlimerJS](http://www.slimerjs.org) #544
 
 version 3.0.0
 ------------------------

lib/analyze/yslow.js

@@ -6,7 +6,8 @@
  */
 var path = require('path'),
   childProcess = require('child_process'),
-  binPath = require('phantomjs').path,
+  phantomPath = require('phantomjs').path,
+  slimerPath = require('slimerjs').path,
   util = require('../util/util'),
   fs = require('fs'),
   winston = require('winston'),
@@ -64,8 +65,16 @@ function analyzeUrl(args, asyncDoneCallback) {
   var config = args.config;
   var log = winston.loggers.get('sitespeed.io');
 
+  var binPath = phantomPath;
+
   // PhantomJS arguments
-  var childArgs = ['--ssl-protocol=any', '--ignore-ssl-errors=yes'];
+  var childArgs = [];
+
+  if (args.slimerjs) {
+    binPath = slimerPath;
+  } else {
+    childArgs.push('--ssl-protocol=any', '--ignore-ssl-errors=yes');
+  }
 
   if (config.proxy) {
     childArgs.push('--proxy', config.urlProxyObject.host, '--proxy-type',

lib/cli.js

@@ -151,6 +151,10 @@ var fs = require('fs-extra'),
         }
       }
     },
+    slimerjs: {
+      flag: true,
+      help: 'Use Slimerjs instead of Phantomjs for yslow processing (Experimental).'
+    },
     ruleSet: {
       metavar: '<RULE-SET>',
       default: defaultConfig.ruleSet,

package.json

@@ -44,6 +44,7 @@
   "dependencies": {
     "handlebars": "2.0.x",
     "phantomjs": "1.9.x",
+    "slimerjs": "0.9.x",
     "async": "0.9.x",
     "fast-stats": "0.0.2",
     "fs-extra": "0.13.x",