README: simple inventory control

@author: harshadura

@dependency: Zebra Scanner SDK for Android v2.1.4.0

@License: MIT

** (Please note that this sample app does not reflect official coding standards of Zebra -- merely a test project that i have made.)

** Barcodes and other resources used for the app can be found in the 'extras' folder

The app demonstrates a simple inventory control.

1. There are two items: Milk and Sugar where they are predefined with an initial stock value.
2. The values get decreased one by one whenever the user scans the relevant barcodes.
3. Scanner makes Long beep for the stock values which can be divided by number 5. (x%5==0)
4. Whenever the user click's "Info menu button" it will display Scanner info. (demonstrates RSM)