klient: add registration to Kontrol via Password
klient: add registration to Kontrol via Password

This PR enables the user to create a kite.key automatically by
authenticating to Kontrol directly with their Koding usernames and
password. If successfull a kite.key is created and places at
~/.kite/kite.key  By default it's disabled.

Usage is in the form of:

klient -register
klient -register -username arslan
klient -register -username arslan -kontrol-url "https://foo.company.com"

This is be used to register any third party machine to kontrol.

gokmen/koding,andrewjcasal/koding,koding/koding,usirin/koding,acbodine/koding,gokmen/koding,andrewjcasal/koding,rjeczalik/koding,rjeczalik/koding,acbodine/koding,usirin/koding,cihangir/koding,jack89129/koding,sinan/koding,cihangir/koding,szkl/koding,szkl/koding,rjeczalik/koding,alex-ionochkin/koding,rjeczalik/koding,szkl/koding,drewsetski/koding,acbodine/koding,usirin/koding,usirin/koding,jack89129/koding,koding/koding,koding/koding,mertaytore/koding,jack89129/koding,szkl/koding,mertaytore/koding,cihangir/koding,koding/koding,usirin/koding,szkl/koding,rjeczalik/koding,cihangir/koding,kwagdy/koding-1,alex-ionochkin/koding,sinan/koding,andrewjcasal/koding,kwagdy/koding-1,gokmen/koding,sinan/koding,szkl/koding,acbodine/koding,andrewjcasal/koding,mertaytore/koding,drewsetski/koding,kwagdy/koding-1,drewsetski/koding,andrewjcasal/koding,alex-ionochkin/koding,mertaytore/koding,sinan/koding,koding/koding,acbodine/koding,alex-ionochkin/koding,gokmen/koding,kwagdy/koding-1,sinan/koding,rjeczalik/koding,drewsetski/koding,andrewjcasal/koding,drewsetski/koding,koding/koding,kwagdy/koding-1,acbodine/koding,mertaytore/koding,gokmen/koding,acbodine/koding,alex-ionochkin/koding,cihangir/koding,acbodine/koding,kwagdy/koding-1,usirin/koding,drewsetski/koding,szkl/koding,sinan/koding,cihangir/koding,kwagdy/koding-1,mertaytore/koding,kwagdy/koding-1,mertaytore/koding,jack89129/koding,jack89129/koding,drewsetski/koding,andrewjcasal/koding,koding/koding,jack89129/koding,jack89129/koding,gokmen/koding,alex-ionochkin/koding,sinan/koding,cihangir/koding,gokmen/koding,alex-ionochkin/koding,mertaytore/koding,koding/koding,gokmen/koding,jack89129/koding,rjeczalik/koding,cihangir/koding,usirin/koding,andrewjcasal/koding,szkl/koding,alex-ionochkin/koding,rjeczalik/koding,sinan/koding,drewsetski/koding,usirin/koding