Allow hyphenate generated names

[daffl]

When the name is also inserted into the code it needs to be _.kebabCased.

[toddgeist]

I was just looking this
https://github.com/feathersjs/generator-feathers/blob/master/generators/service/index.js#L8-L19
Looks like you could use inflect also and it's already in the module

inflect.camelize('message_properties', false); // === 'messageProperties'

[ekryski]

We're already doing this for hooks we just forgot to add it for services (and probably models as well).

[toddgeist]

I'll take a stab at this one. Doesn't look too tough. I think I just need to add a test here.

https://github.com/feathersjs/generator-feathers/blob/master/test/transform.test.js#L6-L26