Added a create velocities function, and a testing function for it.
Added a function that probably calculates acceleration.
Added a file to hold the ode45 function, 'Ringworld',
 although it isn't functional yet.
Commenting

Taking Allen's advice in class, I added whitespace and comments to the
code, as well as adding more descriptive variables.
More Comments

Yes. That's what I did.
Added a testing function for find_acceleration. Modified the loop in
find_acceleration to get it to return a matrix of the correct shape. It
still doesn't work, seems to return too large an acceleration in the wrong
direction.