== Change Calculator

A rails application responsible for calculating optimal change denomination for a given change value from 1 to 99 cents.

== Usage

This app was built using Rails version 2.3.5 and ruby 1.8.7
To start the application server in development mode locally, run script/server and goto http://localhost:3000/

You can then enter the change value in cents between 1 and 99 and the system will output the optimal change denomination

== config
  The coin set that the application uses can be configured in config.yml.
  For example to use the coin set [50,25,10,5,1] the following is added
  coin_set:
    - 50
    - 25
    - 10
    - 5
    - 1

== Unit Testing

The change calculator can be tested by running the unit tests as follows
The tests are written using standard rails testing
rake --trace test:units

== Files added 

app/controllers/change_controller.rb
app/models/change_calculator.rb
app/views/change/index.erb
app/views/change/result.erb
test/unit/change_calculator.rb
config/config.yml

== Files Changed

config/routes.rb # new route was added
config/environment.rb # config.frameworks -= [ :active_record, :active_resource, :action_mailer ] to run rails without a DB
test/test_helper.rb # fixtures related settings where commented out as we are running without DB