[libpng16] Bump version to 1.6.15beta04
diff --git a/README b/README
index 736eced..e1d788d 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.6.15beta03 - November 3, 2014 (shared library 16.0)
+README for libpng version 1.6.15beta04 - November 3, 2014 (shared library 16.0)
 See the note about version numbers near the top of png.h
 
 See INSTALL for instructions on how to install libpng.