Add options to update_attributes method signatures.

[jsphm]

my_page.update_attributes!(active: true) throws ArgumentError: wrong number of arguments (2 for 1). This is because slices overrides mongoid's update_attributes method, but does not maintain the same method signature; it expects only one argument, rather than two.

When the slices implementation of update_attributes is called by mongoid's update_attributes!, the wrong number of arguments is passed and an error occurs.

[jgwhite]

So we’re accepting the options arg then ignoring it? (Not saying this is a problem, just checking I’ve understood)

[jsphm]

@jgwhite That's correct. I debated using _ rather than options as the argument name, but decided the latter would save having to check the definition of super to see the purpose of the second parameter.

[bensymonds]

Looks ok to me 👍

[jgwhite]

agreed 👍

[bensymonds]

@jsphm is this really still wip? Looks like it's ready to go to me...

[jsphm]

Good to go 👍

[calumgunn]

I rebased this, because I'm a good boy.