Improve documentation for development setup
Improve documentation for development setup

This commit is favoured towards documenting Windows development setup.

cellml/libcellml,MichaelClerx/libcellml,cellml/libcellml,nickerso/libcellml,nickerso/libcellml,hsorby/libcellml,cellml/libcellml,MichaelClerx/libcellml,nickerso/libcellml,nickerso/libcellml,cellml/libcellml,hsorby/libcellml,hsorby/libcellml,MichaelClerx/libcellml,hsorby/libcellml