Update readme.md

README.md

 # Image Downlaoder Extension
 Aim : To automate process of downloading images from ImageWork Library
 
-## Documentation
-Link : https://docs.google.com/document/d/1AG8zrX8DMdn7gOooWhF45AqjH8F8O9akiBwotO-qNdM/edit?usp=sharing
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+## Installation
+Step 1 : Git clone the project
+```
+git clone http://gitlab.documentonready.com:1234/root/gu-imageworks-extension.git
+```
+Step 2 : Go to the following [link](chrome://extensions/) and turn on developer mode.
+Step 3 : Click 'Load Unpacked' and Select the Folder cloned.
+Step 4 : Turn on the extension when use