Bump CoffeeScript (close cucumber#154)

Squashed commit of the following:

commit 7a658f5
Author: Gabe Hayes <gabriel.hayes@gmail.com>
Date:   Fri Feb 7 00:20:03 2014 -0800

    register coffee-script at initialize for 1.7.x support

commit d9b155a
Author: Gabe Hayes <gabriel.hayes@gmail.com>
Date:   Thu Feb 6 23:45:07 2014 -0800

    bump coffee-script

lib/cucumber/cli/support_code_loader.js

@@ -1,5 +1,6 @@
 var SupportCodeLoader = function(supportCodeFilePaths) {
   var Cucumber = require('../../cucumber');
+  var CoffeeScript = require('coffee-script');
 
   var self = {
     getSupportCodeLibrary: function getSupportCodeLibrary() {
@@ -13,6 +14,7 @@ var SupportCodeLoader = function(supportCodeFilePaths) {
       var secondarySupportCodeInitializer = self.getSecondarySupportCodeInitializer();
       var initializer = function() {
         var supportCodeHelper = this;
+        CoffeeScript.register();
         primeSupportCodeInitializer.call(supportCodeHelper);
         secondarySupportCodeInitializer.call(supportCodeHelper);
       };

package.json

@@ -60,7 +60,7 @@
     "underscore.string" : "2.3.3",
     "cucumber-html": "0.2.3",
     "walkdir": "0.0.7",
-    "coffee-script": "1.6.3",
+    "coffee-script": "1.7.1",
     "pogo": "0.5.1"
   },
   "devDependencies": {