document how to get started and the planned Connect dependency

README.md

+This is an exploration of the distributed identity system described here:
+https://wiki.mozilla.org/Labs/Identity/VerifiedEmailProtocol
+
+Getting started:
+
+1. install node.js: http://nodejs.org/
+2. install the Connect framework: http://senchalabs.github.com/connect/
+3. run the top level `run.js` script
+4. visit the demo application ('rp') in your web browser (url output on the console at runtime)␁
+