Markdown Sticky Notes wot Qiwei Yang

Features:

- Create new notes by clicking on the extension icon
- Auto save content and position in the web page
- Nice markdown editor & result
- Draggable, resizable
- Multiple editor theme and font styles
- Shortcut: alt + m (mac: option + m)
- SPA support


(If there are bugs/feature suggestions, please email me or raise an issue on GitHub)