EECE 310 Team L2C7 Issue #135 fix

Hi Alex,

We have updated the pull request with the following as you've requested:
 1. Test for XPath escaping apostrophes is now present under `com.crawljax.core.configuration.XpathEscapeapostropheTest.java`
 2. We've pulled the main master branch from crawljax/crawljax repo to our forked repo, and applied only the changes that we've made. Our pull request should now only contain what we've actually changed in the original master branch (crawljax/crawljax).

Please leave any comments if you have any concerns or questions.

Thanks!
Chris