nexusUP simplify automatic QR code generator.

[jesseallison]

Move IP address gatherer into nexusUp.js if possible

Create non-web dependent qr-code generator to replace Kaywa.com

Look at custom URL schemes that would launch our nexusUP app if scanned with a generic qrcode scanner. https://developer.apple.com/library/ios/documentation/iPhone/Conceptual/iPhoneOSProgrammingGuide/AdvancedAppTricks/AdvancedAppTricks.html