Update the readme

(cherry picked from commit b6b2d06737b6be38f87f1c9d877f030b515f8eeb)
Tweak some font colours

(cherry picked from commit 3580483bcbb0d176adfba2c1043f8f0339d0a71b)
Update the preview image to match the 2014 version

(cherry picked from commit bbdacb64d1a4a0cb6cf56374b79aa170a3b57542)
Add the missing text cursor

(cherry picked from commit 18b948c84a7cf45896680712962222c0f27afbb7)