Version used in "Simple and Efficient.." article

This version matches the article "Simple and Efficient GPU accelerated Topology Optimisation: codes and applications" to be published in CMAME.

Getting a DOI

Update README.md

Corrected the default example to a cantilever problem

Initial release

This version matches the article "Simple and Efficient GPU accelerated Topology Optimisation: codes and applications" to be published in CMAME.