add contributor and repo
Changing for localhost to avoid connection to Fabelier's server
Send a feedback to the visitor when it's actuall ringing

It's currently to every visitor currently connected because it was the most straightforward
to implement, and it shouldn't hurt
The host can say he's coming
Timestamp messages
Add some debug logs
Don't print "it's ringing" forever

I'm not applying this to the "I'm coming message" because it's normal that
this action last for some long minutes.
Merge pull request #3 from gturri/ack

Visitor knows when someone hear him
modified the feedback field that can be confusing : some people though they had to type something in
hide feedback field and meta viewport for mobiles
Can use jshint with grunt

and fixed some warnings
Let npm reformate package.json

Whenever I add a dependency using `npm install some-package --save-dev`, it reformtes
this file like this.

I guess we'd better be npm compliant once and for all, rather than fighting against
it each time
Can use nodemon
Updated README
Can activate password
Explain the purpose in the REAdME

When I pointed some friends to this repo, without preliminatory explanation,
it wasn't completely clear why we developped it.
Hence, I try to explain it in our README, because I'm afraid other people
migh also easily miss the point.
(Said differently: it's clear for us because we know our needs, but it's not
 such a common situation)
Only display the "password" field if this option is activated
Updated README
Send feedback to the visitor if the password isn't correct

Now the visitor can discriminate between a bad password and an unreachable server.
Removed feedback in an input