Update .*rc file for all shells

[RCMainak]

Solves issue #2508

Solved the issue with not updating the .*rc file when not installed with BASH. I have tested this with ZSH on Ubuntu.

Note: this fix still requires user to close current terminal & reopen another one.

[ljharb]

This definitely will not work as-is - it would require:

1. Rewriting the install script to work on non-bash shells
2. Testing the install script on every supported shell

The install script should only ever be run in bash.

[RCMainak]

I understand what you mean. It worked for me so I thought about sharing. 😅 Works on my machine kind of scenario. Sorry for wasting your time.