Ensure EMF features included in e4 contacts demo product
diff --git a/examples/org.eclipse.e4.demo.contacts/contacts.product b/examples/org.eclipse.e4.demo.contacts/contacts.product
index 1ee5d13..63b4a39 100644
--- a/examples/org.eclipse.e4.demo.contacts/contacts.product
+++ b/examples/org.eclipse.e4.demo.contacts/contacts.product
@@ -33,6 +33,8 @@
    <features>
       <feature id="org.eclipse.e4.demo.contacts.feature"/>
       <feature id="org.eclipse.e4.rcp"/>
+      <feature id="org.eclipse.emf.ecore"/>
+      <feature id="org.eclipse.emf.common"/>
    </features>