fix: support timeout mocks on ie8

See http://www.adequatelygood.com/Replacing-setTimeout-Globally.html
for description of the problems and solutions.
Jasmine's boot.js already has this hack.

Closes #41

lib/boot.js

@@ -40,6 +40,15 @@
     return suite;
   };
 
+  /**
+   * Setting up timing functions to be able to be overridden. Certain browsers (Safari, IE 8, phantomjs) require
+   * this hack.
+   */
+  window.setTimeout = window.setTimeout;
+  window.setInterval = window.setInterval;
+  window.clearTimeout = window.clearTimeout;
+  window.clearInterval = window.clearInterval;
+
 
   /**
    * Build up the functions that will be exposed as the Jasmine