Update test to cover all code

Fixes mikebronner#44

Author: mikebronner

tests/Unit/DisabledCachedBuilderTest.php

@@ -169,6 +169,7 @@ public function testCursorModelResultsIsNotCached()
  public function testFindModelResultsIsNotCached()
  {
  $author = (new Author)
+ ->with('books')
  ->disableCache()
  ->find(1);
  $key = 'genealabslaravelmodelcachingtestsfixturesauthor_1';