email comes from BrowserID instead of noreply. closes #756

lib/email.js

@@ -84,7 +84,7 @@ function doSend(landing_page, email, site, secret) {
     console.log("\nVERIFICATION URL:\n" + url + "\n");
   } else {
     emailer.send_mail({
-      sender: "noreply@browserid.org",
+      sender: "BrowserID@browserid.org",
       to: email,
       subject : "Complete Login to " + site + " using BrowserID",
       body: mustache.to_html(template, { email: email, link: url, site: site })