Mfxy1 is used for both solvers. There is the Matlab one and the rk4.

Signed-off-by: Matt <hurleydrum.swim@gmail.com>
I made a working code folder in the code folder where
we can put code that is fully operational. We can put
junk code, or code that we are messing around with outside
of the new folder but still in the code folder. Mfxy1 is
the function for both solvers (Matlab's and rk4).

Signed-off-by: Matt <hurleydrum.swim@gmail.com>
Merge branch 'master' of https://github.com/eeconn/uncphys331-polytropes.git
Signed-off-by: Matt <hurleydrum.swim@gmail.com>