Added code to exzbikes controller to automatically convert miles into
kilometers before saving into the database.  Should add some additional
code in the response view which displays the successiful addition in
miles.

 On branch master
 Your branch is up-to-date with 'origin/master'.

 Changes to be committed:
	modified:   exzerco-mate-webui/Gemfile
	modified:   exzerco-mate-webui/Gemfile.lock
	modified:   exzerco-mate-webui/app/controllers/exzbikes_controller.rb
	modified:   exzerco-mate-webui/app/models/exzbike.rb
	modified:   exzerco-mate-webui/app/views/exzbikes/_form.html.erb