Fix failing test by waiting for text to appear

This addresses issue #117.

What's happening right now is that Travis sometimes finds the 'Configure' link element and sometimes not, and because this happens twice in the test, the test is failing at either one or the other, or not at all (resulting in the test passing).  Since Travis tends to run the tests slower than when we run them locally (as @eikonos commented on in the issue), I've added a 'waitForTextPresent' that will hopefully fix the currently failing test.