Generate element creates unnecessary empty dirs

[depsypher]

I'm submitting a bug report

• Library Version:
  0.24.0

• Operating System:
  OSX 10.x

• Node Version:
  v7.4.0

• NPM Version:
  4.0.5

Current behavior:
Running a command such as au generate element foo creates several empty directories.

attributes
binding-behaviors
value-converters

Expected/desired behavior:
I'd prefer no empty dirs to be created.

• What is the expected behavior?
  Just an elements dir with new files in it is created.

• What is the motivation / use case for changing the behavior?
  Given that there are separate generators for each of these things, it is confusing that generate element does anything related to attributes, binding-behaviors or value-converters. Empty dirs don't get tracked in git, so different team members can have different directory structures, and it's just visual noise to see a dir that's empty.

[Alexander-Taran]

Stale since may 2017

[Alexander-Taran]

@3cp what do you think?

[3cp]

Will fix this.