Add support for discord channel (#28)

Author: soniasingla

Diff for: CONTRIBUTING.md

@@ -4,6 +4,8 @@ Welcome! This project is created by the team at [Embark Studios](https://embark.
 
 At Embark, we aspire to empower everyone to create interactive experiences. To do this, we're exploring and pushing the boundaries of new technologies, and sharing our learnings with the open source community.
 
+If you have any difficulties getting involved or finding answers to your questions, please don't hesitate to ask your questions in our [Discord server](https://discord.com/invite/8TW9nfF).
+
 If you have ideas for collaboration, email us at [email protected].
 
 We're also hiring full-time engineers to work with us in Stockholm! Check out our current job postings [here](https://www.embark-studios.com/jobs).