Merge pull request Codeception#21 from sharky98/patch-1

Shimming c3.php for PHP_CodeCoverage

updated deps, ignmored robofile

updated c3 to create tmp dirs

updated composer, fixed plugin autoloading

Merge pull request Codeception#12 from Ragazzo/fix_for_codeception_pa…

…th_detection

fixed condition

do not register shutdown function on debug

fix Codeception#10

updated readme