Merge pull request #1 from heridev/feature_implement_daily_menu

Refactor countries/index endpoint: Returns all countries
Sets ruby 2.1.1 version
Merge branch 'master' of github.com:heridev/spree_demo_store_heroku
Testing: Add rspec

- Add rspec gem
- Config spree helpers
- Ignore spree product images
Checkout endpoits

- Add checkout create endpoint to single checkout
Checkout endpoits

- Move endpoints to an extension
Merge pull request #2 from heridev/feature_single_checkout_endpoint

Feature single checkout endpoint
Add mandrill configuration
Merge pull request #3 from heridev/add_madrill_configuration

Add mandrill configuration
Mandrill configuration

- Remove basic configuration, spree 2-3 deprecate those settings
- Add gem to config mail methods
Merge pull request #4 from heridev/add_madrill_configuration

Mandrill configuration
Add ability to save an schedule time per order line item