Updated info about hidden plist files

Author: rohitdatta

README.md

@@ -5,3 +5,6 @@ This is the official iOS app for HackTX 2015. If you're hosting your own hackath
 ## Installation
 
 After cloning this repository, run `pod setup` then `pod install`. At that point the dependencies for CocoaPods should have installed.
+
+## Configuration Files
+This repository ignores important API keys from public view. To compile after setting up CocoaPods, you need to make sure that you have created these `plist` files for the app to run properly.