Add PHP 7.2 as a supported version to the README

ramsey · ramsey · commit dd4c1dffbb3a · 2018-01-12T20:12:24.000-06:00
diff --git a/README.md b/README.md
@@ -29,6 +29,7 @@ The following versions of PHP are supported.
 * PHP 5.6
 * PHP 7.0
 * PHP 7.1
+* PHP 7.2
 * HHVM
 
 ## Providers
