Added Meetup API

README.md

@@ -420,6 +420,7 @@ Please note a passing build status indicates all listed APIs are available since
 | HackerNews | Social news for CS and entrepreneurship | No | Yes | [Go!](https://github.com/HackerNews/API) |
 | Instagram | Instagram Login, Share on Instagram, Social Plugins and more | `OAuth` | Yes | [Go!](https://www.instagram.com/developer/) |
 | LinkedIn | The foundation of all digital integrations with LinkedIn | `OAuth` | Yes | [Go!](https://developer.linkedin.com/docs/rest-api) |
+| Meetup.com | Data about Meetups from Meetup.com | `apiKey` | Yes | [Go!](https://www.meetup.com/meetup_api/) |
 | Telegram MTProto | Read and write Telegram data | `OAuth` | Yes | [Go!](https://core.telegram.org/api#getting-started) |
 | Telegram bot | Simplified HTTP version of the MTProto API for bots | `OAuth` | Yes | [Go!](https://core.telegram.org/bots/api) |
 | Pinterest | The world's catalog of ideas | `OAuth` | Yes | [Go!](https://developers.pinterest.com/) |