Update Readme

Add Supported module information

Author: ajaybhargav

README.md

@@ -28,3 +28,21 @@
 
 * [Documentation](https://siwisdk.readthedocs.io/en/latest) - SIWISDK documentation for latest version
 * [Support](https://help.siwi.in) - For Technical support and Repairs
+
+# Supported Platforms
+## SIWI S20U GSM Module
+* S20U Module
+* S20 GSM development Board
+<img src="https://siwiembedded.github.io/asset/s20gsm_board.png" alt="s20 gsm board" width="50%">
+
+## Quectel M66 GSM
+<img src="https://www.quectel.com/UploadImage/Product/20200304152709774.png" alt="Quectel M66" width="30%">
+
+## Quectel MC60 GSM
+<img src="https://www.quectel.com/UploadImage/Product/20200302164806327.png" alt="Quectel MC60" width="30%">
+
+## Quectel MC20 GSM
+<img src="https://www.quectel.com/UploadImage/Product/20200302175738828.png" alt="Quectel MC20" width="30%">
+
+## Quectel M56 GSM
+<img src="https://www.quectel.com/UploadImage/Product/20200304115535722.png" alt="Quectel M56" width="30%">