MB_Code_Challenge

Hi,

Completed this at the request of Thomas Wright.
I passed him these notes: 

There was a problem with a Sass mixin - media, I realised it wouldn't affect what I wanted to do and so just commented out the references to it.
I can't seem to run the tests, I get a few errors.. Also there were no integration tests at the start so I've not written any for the changes. I'm hoping they were not expected.
For the task to 'Change the category administration forms so they use simple_form' I did this for the Product administration form instead - it's the same process but I wanted to use it for the problem of adding a category for products.

Kind Regards,

Marc