Build release versions of the app and submit to app stores

[lewisl9029]

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[lewisl9029]

Running into issues for release builds for android and ios.

For android on build: Could not find any version that matches com.google.android.gms:play-services-ads:+
Confirmed with Ionic dev that it's an ionic package issue. Should probably be fixed soon.

For ios on submission: ERROR ITMS-90339 "This bundle is invalid. The Info.plist contains an invalid key 'CFBundleResourceSpecification' in bundle..."
This one should be fixed in the next version of cordova-ios:

https://github.com/MSOpenTech/cordova-ios/commit/d13597d0b7271b121236612f7479af48e52bca97
apache/cordova-ios#175

Depending on the timing of these fixes, we might have to release without either or both builds. Changing landing page messaging to reflect this possibility.

[lewisl9029]

Update for ios release build: cordova-ios 3.9.2 has been released, but ionic package is having some trouble installing it. Still on 3.9.1 for now which doesnt have the fix.

Update for android release build: Release build is now failing due to this issue: wildabeast/BarcodeScanner#276