Reminder to remove workaround when GeoServer GeoJSON issue is fixed

See #1566 and http://jira.codehaus.org/browse/GEOS-5996

src/ol/format/geojsonformat.js

@@ -373,6 +373,8 @@ ol.format.GeoJSON.prototype.readProjection = function(object) {
     } else if (crs.type == 'EPSG') {
       // 'EPSG' is not part of the GeoJSON specification, but is generated by
       // GeoServer.
+      // TODO: remove this when http://jira.codehaus.org/browse/GEOS-5996
+      // is fixed and widely deployed.
       return ol.proj.get('EPSG:' + crs.properties.code);
     } else {
       goog.asserts.fail();