Added YouTube video to README

BhuvaneshHingal · web-flow · commit 6b4181cc1a70 · 2020-08-19T21:08:48.000+05:30
With reference to #89 issue, YouTube Video for Hacktoberfest 2020 has been added to the README.md file.
diff --git a/README.md b/README.md
@@ -1,3 +1,5 @@
+# 👨‍💻Hacktoberfest 2020: What is it? Click on the poster below for more details📽
+[![Watch The Video](https://hacktoberfest.digitalocean.com/og-hf-teaser.png)](https://youtu.be/XFLlakeNO10)
 # Hacktoberfest Practice Pull Requests
 
 Repo for you to raise a Pull Request for practice.

Original file line number	Diff line number	Diff line change
`@@ -1,3 +1,5 @@`
	`1`	`+# 👨‍💻Hacktoberfest 2020: What is it? Click on the poster below for more details📽`
	`2`	`+[![Watch The Video](https://hacktoberfest.digitalocean.com/og-hf-teaser.png)](https://youtu.be/XFLlakeNO10)`
`1`	`3`	`# Hacktoberfest Practice Pull Requests`
`2`	`4`
`3`	`5`	`Repo for you to raise a Pull Request for practice.`