move keys.php to project root and add it to .gitignore
Merge branch 'master' of https://github.com/clarkerubber/engine-evaluator

* 'master' of https://github.com/clarkerubber/engine-evaluator:
  changed floats -> ints
Merge pull request #1 from ornicar/master

move keys.php to project root and add it to .gitignore