Adds Heroku instructions

HEROKU.md

@@ -0,0 +1,26 @@
+# How to Deploy to Heroku
+
+## Prerequisites
+
+* A Ruby installation (>= 1.9.2)
+* Heroku CLI tools (<https://toolbelt.heroku.com/>)
+
+## Create the Heroku app
+
+1. Clone the repository (if you haven't already)
+2. `bundle install --without production`
+3. `heroku create`
+4. `heroku addons:add sendgrid:starter`
+5. `heroku addons:add pgbackups:auto-month` *(optional)*
+6.  Configure the `SECRET_TOKEN` and `HOST`:
+
+    heroku config:add SECRET_TOKEN=\`rake secret` HOST=name.herokuapp.com
+
+7. `git push heroku master`
+8. `heroku run rake db:migrate`
+9. Go to `http://<name>.herokuapp.com` to create an account
+10. Create an admin:
+  * `heroku run console`
+      * In the console: `Admin.create(email: "your@email.com", password: "secret")`
+      * To leave the Rails console: `exit`
+  * Log in as an admin on `http://<name>.herokuapp.com/magic`