Update README

README.md

@@ -20,7 +20,38 @@ Or install it yourself as:
 
 ## Usage
 
-1. Create a .exhaust.yml
+1. Exhaust sets an ENV variable. Tell Ember how to use it.
+
+```javascript
+// config/environment.js
+if (environment === 'development') {
+  // Set the ENV.API_HOST to the environment varibale.
+  // I like to set a default but it's all up to you.
+  ENV.API_HOST = (process.env.API_HOST || 'http://localhost:3000')
+}
+```
+If using Ember Data, set the host to whatever adapter
+
+```javascript
+// app/adapters/application.js
+import DS from 'ember-data';
+import config from '../config/environment';
+
+export default DS.RESTAdapter.extend({
+  host: config.API_HOST
+});
+```
+
+If using Ember.$ reference wherever needed.
+```javascript
+import Ember from 'ember'
+import config from '../config/environment';
+
+
+Ember.$.getJSON(config.API_HOST + "/endpoint")
+```
+
+2. Create a .exhaust.yml
 
 ```yaml
 rails:
@@ -31,29 +62,71 @@ ember:
   port: 4201
 ```
 
-2. Start the servers
+3. Start the servers
+
 ```ruby
 Exhaust.run!
 ```
 
-3. Stop the servers
+4. Stop the servers
 ```ruby
 Exhaust.shutdown!
 ```
 
 ### Using with Cucumber
+
+When used insided a rails app.
+
 ```ruby
 # Add to features/support/env.rb
 Exhaust.run!
 at_exit { Exhaust.shutdown! }
 
 Capybara.configure do |config|
   config.run_server = false
+  // Use whatever driver you want
+  config.default_driver = :webkit
+  config.app_host = Exhaust.ember_host
+end
+```
+
+When seperatly from rails.
+
+1. Add your rails app Gemfile to your own
+
+```ruby
+eval_gemfile File.join("/path/to/rails/Gemfile")
+```
+
+2. Do something like this in your features/support/env.rb
+
+```ruby
+ENV['RAILS_ENV'] ||= 'test'
+path_to_rails = "/path/to/rails"
+require File.expand_path("#{path_to_rails}/config/environment")
+
+require 'capybara/cucumber'
+require 'database_cleaner'
+require 'database_cleaner/cucumber'
+
+DatabaseCleaner.strategy = :truncation
+
+Around do |scenario, block|
+  DatabaseCleaner.cleaning(&block)
+end
+
+Exhaust.run!
+at_exit { Exhaust.shutdown! }
+
+Capybara.configure do |config|
+  // Use whatever driver you want
+  config.default_driver = :webkit
   config.app_host = Exhaust.ember_host
 end
 ```
 
 ### Using with Rspec
+
 ```ruby
 # Add to spec/spec_helper.rb
 Exhaust.run!