Update Java prereqs

Author: PhilWakelin

README.md

@@ -14,8 +14,7 @@ Source code for the following Java class is available in the [`src/com/ibm/cicsd
 
 ## Pre-reqs
 * CICS TS V5.3 with [APAR PI63005](http://www.ibm.com/support/docview.wss?crawler=1&uid=swg1PI63005) or later
-* Java SE 1.7 or later on the z/OS system
-* Java SE 1.7 or later on the workstation
+* Java SE 1.8 or later on the workstation
 * Eclipse with WebSphere Developer Tools and [CICS Explorer SDK](http://www.ibm.com/software/products/en/cics-explorer) installed
   * CICS Explorer V5.3 requires Eclipse 4.4.2 (Luna)
   * [WebSphere Developer Tools for Eclipse Luna](https://developer.ibm.com/wasdev/downloads/#asset/tools-WebSphere_Developer_Tools_for_Eclipse_Luna)