btsync role is missing

With a fresh clone from repository even a simple `ansible-playbook -i vagrant_inventory playbook.yml --tag apt_update ` will not work.

I'm getting an error 

`ERROR: cannot find role in /Users/user/Sites/ansible-web-playbooks/roles/networking/btsync or /Users/user/Sites/ansible-web-playbooks/networking/btsync or /usr/local/etc/ansible/roles/networking/btsync`

I assume that either you missed adding the btsync or maybe it's not yet ready and didn't commit it.

Also I've noticed a missing `networking/interfaces` role.

Please note that I'm quite beginner with ansible,   
Thank you