Add node details to README

Author: knolleary

README.md

@@ -2,3 +2,27 @@ node-red-web-nodes
 ==================
 
 A collection of [node-red](http://nodered.org) nodes aimed at web services
+
+### Installation
+
+The latest release of these nodes can be installed by running:
+
+    $ npm install node-red-node-web-nodes
+
+
+### Nodes
+
+The current release contains the following nodes:
+
+ - Amazon S3
+   - Write to a file
+ - Delicious
+   - Add a bookmark
+ - Dropbox
+   - Write to a file
+ - Flickr
+   - Upload images
+ - Pinboard
+   - Add a bookmark
+
+We are continuing to add additional nodes and broaden their capabilities. Have a look at the [issue list](https://github.com/node-red/node-red-web-nodes/labels/node) for a preview of what's being worked on.