* Updated Lightspeed SDK 2.16
> LightspeedSDK2.5/*
* Changed Lightspeed App key
> LightspeedCredentials.h
* Updated Lightspeed SDK 2.16 (wrong update for the previous commit)
> LightspeedSDK2.5/*
* Checked last launched day (to be tested)
> LSPushAppDelegate.m
* App now register for push notification only at first launch or once a week
> LSPushAppDelegate.m
* Added lightspeed library 2.17
> libLightspeed.a
> LightspeedCredentials.h
* Bug fix: when registering for push channels
> LSPushAppDelegate.m
* Lightspeed SDK 2.17 (Updated version)
> libLightspeed.a
1. Added comments for Arrownock users
 > LightspeedCredentials.h
 > ViewController.m
Merge branch 'feature/lightspeed_sdk_2.17' into develop