Initial commit for the repo
Added files on src directory and crated test structure
Corrected an if when checking if a file existed
Continued Billing and DataLoader implementation and tests

* Created new tests for the billing module
* Altered the tests for the data loader module
* Created the structure of the billing module
* Wrote comments for both the Billing and DataLoader modules
Billing processor changes and it's respective tests

* Changed  the logic of the consts in the billing processor module
* Added a static method to calculate the duration of a call
Added new dependecies and continued development of billing and tests
Corrected some test cases
Implemented the final stage of the application, which loads and
classifies numbers from a data source

* Made a DataLoader that loads a set of CSV data from multiple
source, like string, file or array
* Implemented an algorithm to transverse the prices tree and classify
a number as belonging to a country
* Created a mock app that receives a record and outputs the charge
* Basic logging functionality
Some touches
Some changes to the loading of data

* Changed the way the CSV data is loaded from file
* Removed some files
* Tests may not work right now
Cleanup on tests

Removed files that didn’t matter
Corrected and error no the test-billing suite
Added the twilio_prices.csv file
Finished documentation

Ended the documentation for the core code
Corrected the package.json file
Corrected the toll free numbers detection
Suppressed the logs in the tests
Redid the example application
Added a start command to package.json
Redone the README.md file
Corrected a bug that didn't backtrack in the tree evaluation