First draft of the introduction

Rewrote the introduction as a usecase.

Pulled the introduction into a separate file.

This is a first draft but thought I'd get out a general idea of the introduction I had out as soon as possible.
I agree with the spelling but not sure about the commas. I can see "for these kind of situations" as an introductory clause maybe. However you can omit those if there's no confusion 
But before like I see no reason there should be.