Create Instagram application
1. Goto https://www.instagram.com/ , and sign in to your account.
2. Goto https://www.instagram.com/developer/register/ , and sign up developer account
3. Click 'Register new client'
4. Enter your application data. Set https://oauth.io/auth as a Valid redirect URIs and click 'Register'
5. My congratulations, you've successfully created your first Instagram application. Now you can find its client ID and Secret in "Manage" section.