Merge pull request #433 from Xivolkar/master

Adding Cisco Spark dev portal link

README.md

@@ -415,6 +415,7 @@ API | Description | Auth | HTTPS | Link |
 ### Social
 API | Description | Auth | HTTPS | Link |
 |---|---|---|---|---|
+| Cisco Spark | Team Collaboration Software | `OAuth` | Yes | [Go!](https://developer.ciscospark.com) |
 | Discord | Make bots for Discord, integrate Discord onto an external platform | `OAuth` | Yes | [Go!](https://discordapp.com/developers/docs/intro) |
 | DonReach Social Count | Get the social share count of a URL from every major social network | No | Yes | [Go!](https://donreach.com/social-share-count/) |
 | Facebook | Facebook Login, Share on FB, Social Plugins, Analytics and more | `OAuth` | Yes | [Go!](https://developers.facebook.com/) |