Added SharpPaste under pastebins category. (#981)

* Update README.md

* Update README.md

* Update README.md

Updated following the review.

* Update README.md

README.md

@@ -873,6 +873,7 @@ See https://github.com/n1trux/awesome-sysadmin#monitoring and https://github.com
   * [pbnh](https://github.com/bhanderson/pbnh) - Pastebin inspired from project pb and hastebin, with an API and a SQL-based backend. `MIT` `Python`
   * [Phaste](https://pste.pw) - A Phalcon-based, MySQL pastebin application with privacy-respecting Piwik integration and syntax highlighting. ([Source Code](https://github.com/FoxDev/Phaste)) `AGPLv3` `PHP`
   * [PrivateBin](https://privatebin.info/) - PrivateBin is a minimalist, opensource online pastebin/discussion board where the server has zero knowledge of hosted data. ([Demo](https://privatebin.net/), [Source Code](https://github.com/PrivateBin/PrivateBin)) `Zlib` `PHP`
+  * [SharpPaste](https://github.com/phonicmouse/SharpPaste) - A simple and modern open-source pastebin made with C# and NancyFX that just works. `MIT` `C#/ASP.NET`
   * [snipt](https://snipt.net/) - Long-term memory for coders. Share and store code snippets. ([Source Code](https://github.com/nicksergeant/snipt/)) `BSD` `Python`
   * [Sticky Notes](http://sayakb.github.io/sticky-notes/) - A powerful open-source pastebin application for effortless code sharing. ([Source Code](https://github.com/sayakb/sticky-notes)) `BSD` `PHP`
   * [Stikked](https://github.com/claudehohl/Stikked) - An advanced and beautiful pastebin. `GPLv3` `PHP`