Generate OAuth access token for unsplash API

unsplash_access_token.txt

1. Go to https://unsplash.com/oauth/applications & click on your application

2. Get the access key (aka client_id) & secret key (client_secret)

3. Add http://localhost:3000/callback as a Redirect URI in the 'Redirect URI & Permissions' section

4. Tick 'Public access' and 'Read user access' and 'Write likes access' permissions

5. Click Save

6. Scroll back down to the 'Redirect URI & Permissions', click on 'Authorise' next to http://localhost:3000/callback

7. Authorize with your unsplash user & copy the code from the URL

8. Replace <code>, <clientid> & <client_secret> in below CURL and run it to get your access token.
curl -X POST 'https://unsplash.com/oauth/token?code=<code>&client_id=<clientid>&client_secret=<client_secret>&redirect_uri=http://localhost:3000/callback&grant_type=authorization_code'