Merge pull request #66 from leipert/master

migrate away from gulp-util

Author: knpwrs

lib/index.js

@@ -4,7 +4,7 @@ var _ = require('lodash'),
     through = require('through'),
     proc = require('child_process'),
     join = require('path').join,
-    PluginError = require('gulp-util').PluginError;
+    PluginError = require('plugin-error');
 
 /**
  * Returns a stream to use with Gulp which executes the passed files as Mocha