bumped dev version to 0.4
Raise php version to 5.3.6

Since afb6839f21da687063d9aee2fa8364c938b5f3f0 the code only will run with PHP 5.3.6+

Discussion
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https://github.com/fabpot/PHP-CS-Fixer/pull/157
https://github.com/fabpot/PHP-CS-Fixer/pull/231
minor #234 Feature/raise required php version (Maks3w)

This PR was merged into the master branch.

Discussion
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Feature/raise required php version

Commits
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4e4a50a Raise php version to 5.3.6
1227c08 bumped dev version to 0.4