Add Standard Notes (#1084)

README.md

@@ -173,6 +173,7 @@ Any comments, suggestions? [Let us know!](https://github.com/jaywcjlove/awesome-
 * [OneNote](https://www.onenote.com/) - Note-taking app by Microsoft. ![Freeware][Freeware Icon]
 + [OutlineEdit 3](https://outlineedit.com) - Fully-featured outline editor, for everyone who loves great structured notes. [![App Store][app-store Icon]]
 * [SideNotes](https://www.apptorium.com/sidenotes) - Quick notes on the screen side. Take notes while working with other apps. Use Markdown for text formatting.
+* [Standard Notes](https://standardnotes.com/) - An end-to-end encrypted notes app for digitalists and professionals. [![Open-Source Software][OSS Icon]](https://github.com/standardnotes/app) ![Freeware][Freeware Icon]
 * [QOwnNotes](http://www.qownnotes.org/) - Open-source notepad with markdown support and todo list manager. [![Open-Source Software][OSS Icon]](https://github.com/pbek/QOwnNotes) ![Freeware][Freeware Icon]
 * [Quiver](http://happenapps.com/#quiver) - The Programmer's Notebook, lets you easily mix text, code, Markdown and LaTeX within one note, edit code with an awesome code editor and live preview Markdown and LaTeX.
 * [AliYuQue](https://www.yuque.com/install/desktop) - Cloud note-taking knowledge management, collaboration platform, Markdown based writing, support embedded flow chart, brain diagram, timing sequence, code rendering, Sketch board creation, personal knowledge sharing, etc. Compared to youdao cloud note and evernote similar products, which include all of its functions, support knowledge sharing and more powerful creation, collaboration and editor, it comes from alibaba ant financial.![Freeware][Freeware Icon]