feat(server): add sample env config file that can be tracked by git

app/templates/server/config/_local.env.sample.js

@@ -0,0 +1,23 @@
+'use strict';
+
+// Use local.env.js for environment variables that grunt will set when the server starts locally.
+// Use for your api keys, secrets, etc. This file should not be tracked by git.
+//
+// You will need to set these on the server you deploy to.
+
+module.exports = {
+  DOMAIN: 'http://localhost:9000',
+  SESSION_SECRET: "<%= _.slugify(appname) + '-secret' %>",<% if (filters.facebookAuth) { %>
+
+  FACEBOOK_ID: 'app-id',
+  FACEBOOK_SECRET: 'secret',<% } if (filters.twitterAuth) { %>
+
+  TWITTER_ID: 'app-id',
+  TWITTER_SECRET: 'secret',<% } if (filters.googleAuth) { %>
+
+  GOOGLE_ID: 'app-id',
+  GOOGLE_SECRET: 'secret',
+<% } %>
+  // Control debug level for modules using visionmedia/debug
+  DEBUG: ''
+};