Added Logic lecture

I would appreciate comments and criticism! 
Done.

On Mon, Oct 27, 2014 at 4:58 PM, Nick Carchedi <notifications@github.com>
wrote:

> In R_Programming/Logic/lesson.yaml:
>
> > @@ -0,0 +1,348 @@
> > +- Class: meta
> > +  Course: R Programming
> > +  Lesson: Logic
> > +  Author: Sean Kross
> > +  Type: Standard
>
> Can you change this to Type: Coursera? I'll merge this lesson and add it
> to the Coursera backend as soon as the October run comes to an end.
>
> —
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> <https://github.com/swirldev/swirl_courses/pull/43/files#r19436619>.
>