use penthouse instead of criticalcss

Author: josh-m-sharpe

src/generator.js

@@ -1,10 +1,11 @@
-var request = require('request');
-var bluebird = require('bluebird');
-var path = require( 'path' );
+var request     = require('request');
+var bluebird    = require('bluebird');
+var path        = require('path');
 var criticalcss = require('criticalcss');
-var fs = require('fs');
-var tmpDir = require('os').tmpdir();
-var extend = require('extend');
+var penthouse   = require('penthouse');
+var fs          = require('fs');
+var tmpDir      = require('os').tmpdir();
+var extend      = require('extend');
 
 var tmpPath = path.join(tmpDir, 'crit.css');
 var forced = ['.is-logged-in', '.is-logged-out', '.right-off-canvas-menu'];
@@ -18,12 +19,18 @@ module.exports = function () {
         options = extend({ forceInclude: forced, ignoreConsole: true }, options);
 
         request(cssUrl).pipe(fs.createWriteStream(tmpPath)).on('close', function() {
-          criticalcss.getRules(tmpPath, function(err, output) {
-            if (err) {
-              callback(err);
-            } else {
-              criticalcss.findCritical(sourceUrl, extend({ rules: JSON.parse(output) }, options), callback);
-            }
+          penthouse({
+            url: sourceUrl,
+            css: tmpPath
+          }).
+          then(function(criticalCss){
+            console.log('DONE');
+            console.log(criticalCss);
+            callback(null, criticalCss);
+          }).
+          catch(function(err){
+            console.log(err);
+            callback(err);
           });
         });
       } catch (err) {