Create github_username.js (#609)

# Adding [YourName] under people directory

Hi, here we go. I am adding my name to this repo.

Plese help to review my changes!

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Thank you!

people/github_username.js

@@ -0,0 +1,8 @@
+module.exports = {
+  name: 'Partha Sarathi Dey',
+  github: 'https://github.com/parthasdey2304/',
+  email: '[email protected]',
+  twitter: '@vastavik_parth',
+  facebook: 'xxx',
+  linkedin: 'in/sarathiparth'
+}