Token printing

This set of changes add printing of tokens

A token is a label with a QR code, Nickname, Specialty and Superpower

GET people/1.pdf will return the token image as a PDF that can be printed on a label printer
GET people/1/print_token will print the label on the default printer connected to the server

The media to print on is select in config/initilizers/qr_code.rb
Rails.config.token_media
Current supported values:
DC03 => 29 X 90 mm address labels
DC04 => 38 X 90 mm large address labels
A4 does not currently work.
Don’t know. I merged from your branch so this should have been in sync when your branch merged. I didn’t change the file. I will revert if necessary.



> On 28 Nov 2014, at 1:08 pm, Andreas Thurn <notifications@github.com> wrote:
> 
> In .simplecov:
> 
> > \ No newline at end of file
> > +require 'codeclimate-test-reporter'
> > +require 'coveralls'
> why are these changes on this pr?
> 
> —
> Reply to this email directly or view it on GitHub <https://github.com/StephenSmithwick/DisasterRegistration/pull/8/files#r21015048>.
>