Creating/Updating README.md of major directories

[NamanManjkhola]

Description

Completing list of C++, Java, python, C program on README.md/Creating README.md for Dart, Kotlin, Javascript and adding link for the same to access them easily.

screenshot

[NamanManjkhola]

Hey @swaaz I'm hactoberfest participant. Can I work on this issue?

[swaaz]

Yea sure you can work but try to update all readme @NamanManjkhola

[NamanManjkhola]

Every Directory's readme? @swaaz

[swaaz]

@NamanManjkhola Yep if possible.

[NamanManjkhola]

Okay. I'll do it

[NamanManjkhola]

@swaaz please add the name in assignees and add Hacktoberfest tag.

[NamanManjkhola]

@swaaz I need to commit changes to hacktoberfest branch right?