Merge branch 'hotfix/158'

Fixes #158
Streamline QA tools

- Replace check-cs.sh with inline `--config-file` option for php-cs-fixer
- Remove psr0 rule for php-cs-fixer (we use psr4)
- Use most specific dependencies, not entire zendframework
- Add contribution guide
CS fixes (unused use statement, control spaces)
Merge branch 'feature/streamline-tools'

Streamline QA tools and dependencies; add contribution guide
Update composer.json

- Add dev-develop branch alias to 1.1
- Remove oauth2-server-php (zf-oauth2 already will bring in a stable version)
Merge branch 'hotfix/dependencies' into develop

composer.json fixes