README touchup
Revert "README touchup"

This reverts commit 69fa02e78178f59ba9b94f2a99be0835e93122c7.
Prep for v0.4.1
Added comments in make_move explaining case where dest is None
Touched up the demo script
Added todo notes to the demo-script
Moved limit parameter for solver into constructor
Now using argparse; many more options in demo
Fixed problem with argparse useage
Minor update to the README
Fixed typo in README
Added more options to the demo script
Added help ouput of demo to README
PyPi release 0.4.1