Update Readme file

Author: ajaybhargav

README.md

@@ -1,3 +1,17 @@
-# SIWIGSM platform for Platformio
+# SIWIGSM for Platformio
 
+![Examples](https://github.com/siwiembedded/platform-siwigsm/workflows/Examples/badge.svg)
 
+## Installation
+
+1. Install [Visual Studio Code](https://code.visualstudio.com/)
+2. Install [PlatformIO Extension for VSCode](https://platformio.org/platformio-ide)
+3. Install SiWi GSM Platform:
+	* Open PlatformIO Home
+	* Go to Platforms -> Advanced Installation
+	* Paste repository link https://github.com/siwiembedded/siwigsm.git
+	* Click Install
+
+## Examples
+
+* gpio-blink - GPIO Toggle example