Default to Faker if no Kind found.
Rename default Kind to Generic

I would call it “Default”, but PHP does not like that.
Merge pull request #48 from Zizaco/default-to-faker

Default to faker
Merge branch 'master' of github.com:Zizaco/factory-muff

Conflicts:
	src/Zizaco/FactoryMuff/Kind.php
	src/Zizaco/FactoryMuff/Kind/None.php