Document a better installation process
Merge pull request #7 from ckdarby/master

Better installation process
Document a better installation process
dunit version is not 1.2.1.
Use consistent command substitution.
Pull in configuration *after* configuration path is set via the option.
Rename dev to (git) to make it clear when using a git version.
Merge branch 'master' into dev
Don't be a login shell; Don't want to pull in profile over top of what user may have.
composer install doesn't need to produce a defaults file, so don't add the unnessary side-effect.