Fix: Remove useless .gitmodules
Enhancement: Add CONTRIBUTING.md
Merge pull request #265 from localheinz/feature/contributing

Enhancement: Add CONTRIBUTING.md
Merge pull request #264 from localheinz/fix/remove-useless-file

Fix: Remove useless .gitmodules
Fix: Inject module mapper
Merge pull request #267 from localheinz/fix/inject-module-mapper-into-index-controller

Fix: Inject module mapper into ZfModule\Controller\IndexController
Fix: Remove unknown controller from controller configuration
Merge pull request #269 from localheinz/fix/remove-unknown-controller-from-config

Fix: Remove unknown controller from controller configuration
Merge remote-tracking branch 'upstream/master'