Update phantomjs/runner.js

I'm updated runner.js to show, green color for 0 failed. (Took 19ms to run 1 tests. 1 passed, 0 failed.) and red color for 1 or more failed ( Took 19ms to run 1 tests. 1 passed, 1 failed.) 

![terminal](https://f.cloud.github.com/assets/699879/205803/3b98dd98-81b9-11e2-840c-7863c9e51dd8.png)