atom is handled as well by the XML importer

git-svn-id: http://google-refine.googlecode.com/svn/trunk@374 7d457c2a-affb-35e4-300a-418c747d4874

src/main/java/com/metaweb/gridworks/commands/edit/CreateProjectCommand.java

@@ -305,6 +305,7 @@ public class CreateProjectCommand extends Command {
             } else if (
                     fileName.endsWith(".xml") ||
                     fileName.endsWith(".rdf") ||
+                    fileName.endsWith(".atom") ||
                     fileName.endsWith(".rss")
                 ) {
                 return new XmlImporter();