Add project summary and usage to README

+Canopy platform facilitates a social web by way of interconnected personal websites.
+
+Your website is dynamically driven and communicates with other personal websites in
+real time using open social web protocols. You administer your site from your site.
+
+## Try
+
+Spawn your website on a Digital Ocean droplet.
+
+    pip install webint
+    web config --host digitalocean --token {YOUR_TOKEN}
+    web init {YOUR_DOMAIN} canopy-platform canopy:app
+
 ## Typeface Attribution
 
 Ubuntu (Ubuntu font licence, version 1.0)