update readme

Author: Tejas Shah

README.md

@@ -1,10 +1,19 @@
-Automate Java Samples
+App Automate Java Samples
 ---------------------
 
-This repository contains code samples from http://www.browserstack.com/automate/java. Please feel free to clone the repo and use the example code.
+This repository contains code for Automated Native App tests using Appium in Java. Please feel free to clone the repo and use the example code.
 
+## Running your tests
+- Do remember to switch the USERNAME and ACCESS_KEY with your own browserstack credentials.
+- Upload your Native App (.apk file) to BrowserStack servers using upload API:
 
-Do remember to switch the USERNAME and ACCESS_KEY with your own browserstack credentials.
+  ```
+  curl -u "username:accesskey" -X POST "https://api.browserstack.com/app-automate/upload" -F "file=@/path/to/app/file/Application-debug.apk"
+  ```
+
+- If you do not have an .apk file and looking to simply try App Automate, [you can download our sample app and upload](https://www.browserstack.com/app-automate/sample-apps/android/WikipediaSample.apk)
+to the BrowserStack servers using the above API.
+- Update the desired capability "app" with the App URL returned from the above API call
 
 For frameworks integration with BrowserStack, refer to their individual repositories -