Improve install_ddev.sh to take a version and handle architectures, fixes #1587, fixes #2416 (#2528)
Improve install_ddev.sh to take a version and handle architectures, fixes #1587, fixes #2416 (#2528)

* Allow install_ddev.sh to specify a particular version, fixes #1587
* Run mkcert -install, fixes #2416
* Add architecture to download file where necessary
* Improve curl to fail when not found
drud/ddev,drud/ddev,rfay/ddev,rfay/ddev,rfay/ddev,drud/ddev,rfay/ddev,rfay/ddev,drud/ddev,drud/ddev