Edited README to reflect change of project name.
Many important changes. First, I reorganized the source directory slightly,
adding the subdirectory Numerical. Additionally, I rewrote the comments in order
to work with f90doc, which is now included in the binary folder. I added the
FoBiS.py script and a fobos file which defines the default build parameters and
the task to produce documentation. Finally, I added a new dummy module, which
can be used to load all other Futility modules.