refactor finder; remove test code from euler.js
add comment to validator
add bug fix for files requested that don't exist in problems.txt
add TODOs for unit tests
add beforeEach and afterEach hooks to generator tests
Merge pull request #34 from aaromp/master

add tests
fix bug with -g option so that when no arg is passed it generates next greatest problem file
update package.json to run mocha tests
add yml file for CI with travis
Merge branch 'master' of https://github.com/jrhdoty/EulerJS