Revert "Temporarily switch to HTTP"

This reverts commit 6249faa73cc3d11beb25f13525c3ab53f7601189.
Update README

Update certifiate and key creation procedure so CommonName (CN)
field can be specified. The client won't accept the certificate
witout a CN.

Signed-off-by: Martin Abente Lahaye <tch@sugarlabs.org>
Release 0.1.0

Signed-off-by: Martin Abente Lahaye <tch@sugarlabs.org>