Add a utility to create a gravatar hash.

bin/email_hash.js

@@ -0,0 +1,17 @@
+#!/usr/bin/node
+//
+// Returns a Gravatar stle hash as per: http://en.gravatar.com/site/implement/hash/
+//
+
+if (process.argv.length != 3) {
+  process.stderr.write("Usage: " + process.argv[1] + " email_address\n\nReturns gravitar style hash.\n");
+
+} else {
+  var md5 = require('crypto').createHash('md5');
+
+  md5.update(process.argv[2].trim().toLowerCase());
+
+  process.stdout.write(md5.digest('hex') + "\n");
+}
+
+// vim:sw=2:sts=2:ts=8:et