BUG: Fix argument order in call to super
- [x] tests added / passed
- [x] passes `git diff upstream/master | flake8 --diff`

`super` should have arguments (type, object), not (object, type).

I've run `test_fast.sh` using Python 2.7 and it gives [2 failures](https://github.com/pydata/pandas/files/225866/testfail.txt) relating to language locales (I'm using en_GB). Pretty sure these are unrelated to the commit.
