1. First of all, you login/signup into your Stripe account.
2. Then click on the account name on the top right corner and click "Account Settings"
3. Click on API KEYS and you will see 2 sets of API Credentials - test and live. To "play around", copy the test version and all payments will go to your test panel in Stripe. When you want to start promoting your services don't forget to switch to the live API keys.
4. Log in to your Emivio account and click Settings->Payment Settings and you will see the page in the image below. Choose Stripe as the payment gateway then click "Save Settings".
5. You will reach the page in the image below where you should copy/paste your Stripe API Keys and then click Save Changes
6. DON'T forget to change your API credentials to live when you want to start earning money.