Refactoring: split bootstrap method
Fixed InputOption's option
Test Suite clean-up.

* Tests without test methods are dead tests.
* Moved MigrationTest its subject's namespace.
Removing hard dependency on pimple
Removing dependency on pimple

* from composer.json (added suggestion)
* From docblock
docs: Pimple is no longer being installed as a dep
Added information about pimple to CHANGELOG
Bugfix
Merge pull request #43 from seiffert/container-adapter

Removed dependency on pimple (Fixing #41)