Added Exchanges in Nepal

[tuladhar]

Added Nepal's first exchange "Bitsewa" and Nepal's flag.

About Bitsewa

Bitsewa is Nepal's first Bitcoin exchange, which has been operating for nearly 8 months now. Bitsewa exchange provides best rates with automated and instant buying/selling of Bitcoin and many Digital Assets. Bitsewa has been operating under the company called "Bitsewa Pvt. Ltd." and they are legally registered software company in Nepal which can be verified at government company registration website: http://www.ocr.gov.np/index.php/en/

For more details contact me or email at support@bitsewa.com

[wbnns]

@tuladhar Hi there! Thanks for submitting this. Could you please:

1. Change the flag to this one.
2. Rebase your PR to resolve the conflicts.

Once you've done that this LGTM. 👍

[tuladhar]

Hi @wbnns

Please kindly review the changes.

Hope I didn't messed up anything 🤞

Thanks

[wbnns]

@tuladhar Thanks. Just one more change that I noted and then I think we're good to go.

Please let me know if you have any questions.

[wbnns]

@tuladhar Please remove the <br> since there is only one entry for Nepal at the moment.

[tuladhar]

Thanks @wbnns It has been fixed on commit 7f01f05

[wbnns]

@tuladhar Thanks a bunch for working on this. Another PR created a merge conflict here, so I went ahead and took care of adding Bitsewa for you in #1656 so you don't have to do anything else. 👍