Update README.md

Author: lauweijie

README.md

@@ -1,3 +1,31 @@
 # Resource Collector Chrome Extension
 
-This extension helps you contribute design resources to Design Open.
+This Chrome extension helps you contribute design resources to Design Open.
+
+ * Easily submit resources to Design Open
+ * Keep track of all the resources you submit
+ * Data is synced across all devices running Google Chrome
+
+## Installation
+
+### Chrome Web Store
+
+The latest release of this extension can be installed directly from the Chrome Web Store.
+
+Simply visit the the [extension listing](https://chrome.google.com/webstore/detail/design-open/jahbclkpigpnoeamhgdilpdocgicnmml) on the Chrome Web Store and click the "Add to Chrome" button.
+
+### From Source
+
+1. Clone the Git repository
+
+    ```
+    git clone https://github.com/DesignOpen/ResourceCollectorChromeExtension.git
+    ```
+ 
+2. In Chrome, go to `Menu` > `More tools` > `Extensions` or navigate to `chrome://extensions/`
+
+3. Ensure that the "Developer mode" checkbox is checked
+
+4. Click "Load unpacked extension..."
+
+5. Navigate to the directory where the project files are