EPLHelpers: add logging

src/main/java/EPLHelpers.java

@@ -1,7 +1,11 @@
 import org.joda.time.DateTime;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 
 public class EPLHelpers {
+    final static Logger log = LoggerFactory.getLogger(EPLHelpers.class);
+
 
     public static int getHour(DateTime date) {
         return date.getHourOfDay();