Update README with initial usage instructions

README.md

@@ -1,8 +1,40 @@
 # Band Detection [![Build Status](https://travis-ci.org/Shelnutt2/BandDetection.svg?branch=master)](https://travis-ci.org/Shelnutt2/BandDetection) [![Coverage Status](https://coveralls.io/repos/github/Shelnutt2/BandDetection/badge.svg?branch=master)](https://coveralls.io/github/Shelnutt2/BandDetection?branch=master)
 
-This library is designed for root qualcomm android devices.
+This library is designed for rooted qualcomm android devices.
+
+This library is experimental and is missing all safety checks.  Use this
+at your own risk.
 
 ## Documentation
 
 Java docs are available here:
 [http://shelnutt2.github.io/BandDetection/](http://shelnutt2.github.io/BandDetection/)
+
+## Usage
+
+This library requires root and uses RootTools for access.
+
+Include this in your gradle dependencies
+
+```
+compile 'nu.shel.banddetection:banddetection:0.9.0'
+```
+
+To get the band call the static function BandDetection.DetectBand.
+This will find the modem serial device, get earfcn and translate it to 
+a band object.
+
+```java
+LTEBand currentBand = BandDetection.DetectBand();
+```
+
+## Advanced Usage
+
+This library also provides a way to run raw commands on the modem.
+
+```java
+// Create new modem object
+Modem mModem = new Modem();
+// Run "AT" serial command and get output in ArrayList of each line.
+ArrayList<String> output = mModem.RunModemCommand("AT");
+```