added Phil as co-author

grosu · grosu · commit f20b76d9ee6b · 2017-11-28T22:48:44.000-06:00
diff --git a/erc20.md b/erc20.md
@@ -1,7 +1,7 @@
 ERC20: Formal Executable Specification
 ======================================
 
-Author: [Grigore Rosu](http://fsl.cs.illinois.edu/grosu)
+Authors: [Philip Daian](http://pdaian.com/) and [Grigore Rosu](http://fsl.cs.illinois.edu/grosu)
 
 Date: November 28, 2017
 
