Default Splash Screen Android

Added a default.png file for Android Splash Screen (replaced with old
startup page)
Default Splash Screen iOS

Changed Default.png file in Resources/iphone for the new splash screen
Default2x Splash Screen iPhone 4th gen

Changed default splash screen for iPhone 4/4S iPod touch 4th generation
- file name Default@2x.png
Merge branch 'master' of https://github.com/gcborders/PMP-Fundamentals-resource-tree into BordersCS633
Downloaded changes 3/31/14

Downloaded all changes from 3/31/14