1. Log in
2. Retrieve API key
3. Using API key request token with next url:

• https://trello.com/1/authorize?key=API_KEY&name=Jarboo.Admin&expiration=never&response_type=token&scope=read,write

4. Set web.config's TrelloApiKey and TrelloToken app settings
5. Integration complete

1. Enable the Drive API
2. Go to the Google Developers Console
3. Select a project, or create a new one
4. In the sidebar on the left, expand APIs & auth. Next, click APIs. In the list of APIs, make sure the status is ON for the Drive API.
5. Register client
6. In your project menu on the left, select APIs & auth / Credentials
7. Press Create new Client ID
8. Select Web application
9. Fill consent info
10. Authorized JavaScript origins: SITE_URL (e.g. http://localhost:8000)
11. Authorized redirect URIs: SITE_URL/AuthCallback/IndexAsync (e.g. http://localhost:8000/AuthCallback/IndexAsync)
12. Set web.config's GoogleClientId and GoogleClientSecret app settings
13. Request refresh token
14. Log in google account with Drive
15. Open web application and go to SITE_URL/admin/requestrefreshtoken (e.g. http://localhost:8000/admin/requestrefreshtoken)
16. Permit access for application to the Google Drive
17. Copy refresh token to web.config's GoogleRefreshToken app setting
18. Integration complete

In order to rerequest refresh token you need to disconnect application from Drive first.