fixed #240 : reworked digital watch example

examples/digital_watch/.settings/org.eclipse.core.resources.prefs

@@ -1,3 +1,2 @@
 eclipse.preferences.version=1
 encoding/<project>=UTF-8
-encoding/DigitalWatch.sct=UTF-8

examples/digital_watch/DigitalWatch.sct.launch

@@ -3,6 +3,6 @@
 <booleanAttribute key="cycleBased" value="true"/>
 <intAttribute key="cyclePeriod" value="100"/>
 <booleanAttribute key="eventDriven" value="false"/>
-<stringAttribute key="filename" value="/digital_watch/DigitalWatch.sct"/>
+<stringAttribute key="filename" value="/digital_watch/Watch.sct"/>
 <stringAttribute key="operationClass" value=""/>
 </launchConfiguration>