Merge pull request #1 from IonicaBizau/master

Replace spaces, validate string, update .gitignore
add Ionică to contributors and bump version
add MIT license
replace dot sign with a 0 to keep solver function clean
Add readme
implement new output function which Fixes #2
add an option to output the problem
bump version and update readme
oops fix typo
Added toString and printSolution methods.
Updated test file using printSolution
Updated README file with the new methods.