Add interactive CLI, rather than just calling it like pizzaparty

[docsmooth]

version 0.10 still requires either importing the objects and calling them via python interactively:

'python
import pytappd
p=pytappd.dotappd("docsmooth")
p.authObject=pytappd.authObject(config="../auth.ini")
me.p.getUser("")
sn=me.beerlist[2].brewery
sn.update(p)'

or from the shell:

'python3 ./src/pytappd.py -b "galaxy-hero haze" -t actions -a checkin --shout "I really like this one" --rating 4'

I imported Cmd so I remember the module I think will be easiest, but nothing's been done there yet.