How do I add an image to a Leanpub book if I'm writing in the GitHub or Dropbox writing mode?

To add an image, save the image in your resources folder in your manuscript folder.

Then, where you want the image to appear in your book, type this on a line by itself:

So, if you added a file named cats.png to your resources folder, and you wanted a caption that said "Cats", you would type this:

You could also insert the image with no caption, like this:

You can find more instructions for inserting images in the Markua manual here:

https://leanpub.com/markua/read#images