code: function(expect, sinon, name){
      if(typeof(name) === 'undefined'){
        name = 'spy';
      }
  
      SinonExpect._expect = expect;
      SinonExpect._sinon = sinon;
  
      SinonExpect.ExpectWrapper.__proto__ = expect.Assertion;
      SinonExpect.ExpectWrapper.spyName = name;
  
      var result = function(obj){
        return new SinonExpect.ExpectWrapper(obj);
      };
  
      result.Assertion = SinonExpect.ExpectWrapper;
  
      SinonExpect.buildMatchers();
  
      return result;
    }
docs: Enhances expect with sinon matchers.
  Usage:
  
  
  //Yes you need to override the old expect, sorry.
  expect = SinonExpect.enhance(expect, sinon)
  
  expect(object.withSpy).spy.called();
  
  
  
  @param {expect.js} expect expect.js object
  @param {sinon} sinon sinon instance