.travis.yml in picasa-0.3.3 vs .travis.yml in picasa-0.4.0

@@ -1,6 +1,11 @@
 notifications:
   disabled: true
 rvm:
   - 1.8.7
-  - 1.9.2
   - 1.9.3
+env:
+  - XML_PARSER=rexml
+  - XML_PARSER=nokogiri
+  - XML_PARSER=libxml
+  # does not work yet
+  # - XML_PARSER=ox