Add "json" gem as dependency
First files, copied from the original project.

"DeadlySerious" was born in another project. I'm extracting it.

It's not working yet. I just copied the files and put the proper names
in the directories and modules.
Changing file names to match class names
Fixes on dasherize and terminate the process when an error occur.

My dasherize function had a bug. Also, if some error occur, the children
processes keep running and the parent process "ate" the error.

Now things are smoother.