Provision images on Figshare

[uschille]

Once all episodes have been revised, and #81 #65 #58 #39 #120 #153 have been resolved, we can package the example images and upload to Figshare and provide the link in the setup instructions #165.

• include figshare link in setup instructions

[tobyhodges]

Noting here that #81 #65 and #58 are not considered essential for the beta release of the lesson, so they do not necessarily need to be addressed before the data can be uploaded to FigShare.

#153 is waiting until some of the other large changes have been made - whole-episode revisions etc - as the collection of images used is expected to change as well.

[tobyhodges]

#182 has been merged and I think this is ready to go.