Add Medium post to intro (mimblewimble#2654)

Spoke to @yeastplume who agreed it makes sense to add the "Grin Transactions Explained, Step-by-Step" Medium post to intro.md Open for suggestions on a better location.
cyclefortytwo · Apr 2, 2019 · 4256896 · 4256896
1 parent d46a497
commit 4256896
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/doc/intro.md b/doc/intro.md
@@ -23,6 +23,8 @@ The main goal and characteristics of the Grin project are:
 * Design simplicity that makes it easy to audit and maintain over time.
 * Community driven, encouraging mining decentralization.
 
+A detailed post on the step-by-step of how Grin transactions work (with graphics) can be found [in this Medium post](https://medium.com/@brandonarvanaghi/grin-transactions-explained-step-by-step-fdceb905a853). 
+
 ## Tongue Tying for Everyone
 
 This document is targeted at readers with a good