Added specific phpunit version to composer dependencies
Merge pull request #2 from danielholmes/phpunit_dep

Added specific phpunit version to composer dependencies
Added composer.phar to git ignore

Prevent accidentally committing + pushing it
Merge pull request #3 from danielholmes/patch-1

Added composer.phar to git ignore
Removed composer.lock from .gitignore
Changed .gitignore syntax for composer.phar entry
Added currency option to create charge
Merge pull request #4 from danielholmes/charge_currency

Added currency option to create charge