Add known issues with Unit test and PowerMock

Author: pitbulk

README.md

@@ -30,4 +30,10 @@ Not ready yet, it lacks documentation and not officially distributed.
 At the Package Explorer, select the jsp-sample project, 2nd bottom of the mouse and Run As > Run Server
 Select a Tomcat Server in order to deploy the server.
 
+### Unit Tests
 
+Known issues while testing:
+
+ * [ECLEmma coverage plugin incompatible with PowerMock](http://stackoverflow.com/questions/23363212/powermock-eclemma-coverage-issue)
+  
+ * When using @PrepareForTest and PowerMockito the breakpoints not does [not stop when debugging](http://stackoverflow.com/questions/35140575/powermockito-junit-and-eclemma-debugging-dosent-work). The solution is define Rules.