Explore Windows compatibility

[agitter]

The flopro package and scripts have initially been developed and tested on Linux. The main flow algorithm runs on Windows with the --flow-only argument, but the full visualization pipeline did not during my testing.

In #7 (comment) we noted an issue calling the Python scripts with subprocess on Windows. Part of the solution may be to add update the PATH as described in #7 (comment). Using wget to download the data files from figshare as instructed in the readme will also not work if wget is not available on Windows.

This code could be made compatible with Windows if there is sufficient interest. Any potential Windows users can please comment here.