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+
+# Note we depend on NODE_ENV being set to dictate which of the env variables below get loaded at runtime. 
+# See README for more details.
+
+# Get this from https://mlab.com/home after you've logged in and created a database
+MONGODB_URI=mongodb://<mlab_user>:<mlab_password>@<mlab_connection_url>
+
+# This is standard running mongodb locally
+MONGODB_URI_LOCAL=mongodb://localhost:27017/<database>
+
+# Put lots of randomness in these
+SESSION_SECRET=sessionsecret
+
+# Facebook keys - register your app and get yours here: https://developers.facebook.com/
+FACEBOOK_ID=facebookID
+FACEBOOK_SECRET=facebooksecret
+
+# SendGrid Login - create an account with SendGrid here: https://signup.sendgrid.com/
+SENDGRID_USER=myusername
+SENDGRID_PASSWORD=mysecurepassword
+
+# Application Port - express server listens on this port (default 3000).
+PORT=3000