added Notepad++ to editors, thanks @andrewphilipsmith

README.md

@@ -320,6 +320,7 @@
   * [KDevelop](https://www.kdevelop.org/) - IDE by the people behind KDE.
   * [Light Table](http://lighttable.com/) - The next generation code editor.
   * [Lime](http://limetext.org/) - Aims to provide an open source solution to Sublime Text
+  * [Notepad++](https://notepad-plus-plus.org/) - GPLv2 multi-language editor with syntax highlighting for Windows.
   * [TextMate](https://github.com/textmate/textmate/) - A graphical text editor for OS X.
   * [Vim](http://www.vim.org) - A highly configurable text editor built to enable efficient editing.
   * [Visual Studio Code](https://code.visualstudio.com/) - An open source cross-platform extensible code editor from Microsoft