Opening up external links in browser

I added an ActionBar item in the WebView to allow for links to be opened in a browser.  Pretty simple commit.  NOTE: This is my first pull request on GitHub.  I followed your instructions to add the project into IntelliJ (Android Studio), but it added a lot of XML to the build it seems.  I can try to clean things up a bit and recommit, but this was the only way I got the project to run.