A lightweight Atom plugin for inserting interactive screenshots into Markdown files.

1. Write the line to display the image you'd like to insert, i.e. ![my screenshot](../figures/my_screenshot.png).
2. Highlight the relative path with your cursor, i.e. ../figures/my_screenshot.png.
3. Run markdown-insert-screenshot:screenshot-to-relative-destination from the Command Palette or invoke the keymap cmd-@.
4. At this point, an interactive cursor will appear; switch to your desired window, drag-and-capture your desired selection, then release. The screenshot will be saved to your specified destination and immediately available in a Markdown preview tab.