Perhaps emphasize the flow on the readme page

[bazzaar]

@nxadm in light of @librasteve's comments, would it be worth to emphasize the flow on the readme page. Something like :

Step 1. Download and install the rakudo-pkg
...
...

Step 2. Enable the zef module manager
...
...

Step 3. Add rakudo to your $PATH
...
...

Step 99. [Optional] Clean Up, if you later decide to remove the rakudo-pkg.
...
...

[librasteve]

My thinking is to do this on the rakudo.org site ... would be ideal if the GH README reflects the same info ++