Add gif entry

src/main/resources/META-INF/maven/archetype-metadata.xml

@@ -485,6 +485,7 @@
                         <exclude>**/*.png</exclude>
                         <exclude>**/*.jpeg</exclude>
                         <exclude>**/*.jpg</exclude>
+                        <include>**/*.gif</include>
                         <exclude>**/image</exclude>
                         <exclude>**/original</exclude>
                         <exclude>**/*.eot</exclude>