Add specification images

67969d5e · Dominick Leppich · bab59bcb · 67969d5e · 67969d5e · 67969d5e
Commit 67969d5e authored 6 years ago by Dominick Leppich
--- a/specification/images/board-3-empty.png
+++ b/specification/images/board-3-empty.png
--- a/specification/images/board-3-situation1.png
+++ b/specification/images/board-3-situation1.png
--- a/specification/images/board-5-illegal.png
+++ b/specification/images/board-5-illegal.png