Fix #94 - Prevent NPE if the user taps "Load More Arrivals" and there is a bad response from the server.
Merge pull request #95 from CUTR-at-USF/issue94-NpeArrivalFragment

Fix #94 - Prevent NPE if the user taps "Load More Arrivals" and
Fix #97 - Add AndroidStyle.xml code style template and apply this template to the project via Android Studio.  Update Readme and Contribution docs to reflect the new official style guide and template.
Merge pull request #98 from CUTR-at-USF/issue97-CodeStyle

Fix #97 - Add AndroidStyle.xml code style template and apply this templa...