How to integrate Salesforce with Ruby on Rails ROR

Salesforce integration with Ruby on Rails ROR is popular topics. Both Salesforce and Ruby on Rails ROR are popular in US and the world.

First, need to create connected app in Salesforce. To create Connected Apps in Salesforce:

1. Login Salesforce as administrator.
2. Drop-down list of the account (upper-right), select Setup. 
3. Left-hand pane, App Setup > Create >Apps.
4. Connected Apps panel, click "New".
5. Fill in basic info: App Name - demo REST, API name. REST_Demo and contact email