Added Foundation version

Author: Jeremy Englert

README.md

@@ -1,5 +1,6 @@
 Find out more here: www.jointswp.com  
 Demo: www.jointswp.com/demo
+Foundation Version: 5.5.2
 
 ### What is JointsWP?
 JointsWP is a blank WordPress theme built with Foundation 5, giving you all the power and flexibility you need to build complex, mobile friendly websites without having to start from scratch.