Merge pull request #318 from MMayla/patch-1

Add api.ai in Machine Learning section

README.md

@@ -267,6 +267,7 @@ For information on contributing to this project, please see the [contributing gu
 
 | API | Description | Auth | HTTPS | Link |
 |---|---|---|---|---|
+| API.AI | Natural Language Processing | `apikey` | Yes | [Go!](https://api.ai/) |
 | Clarifai | Computer Vision | `OAuth` | Yes | [Go!](https://developer.clarifai.com/) |
 | Cleverbot | Web chat bot | `apikey` | Yes | [Go!](https://www.cleverbot.com/api/) |
 | Unplugg | Forecasting API for timeseries data | `apikey` | Yes | [Go!](https://unplu.gg/test_api.html) |