Merge pull request sjparkinson#60 from sjparkinson/patch-php-version

Update to support PHP 7

Merge pull request sjparkinson#46 from shadowhand/patch-1

Add global usage instructions to README

Merge pull request sjparkinson#50 from shadowhand/hotfix/49-imperitiv…

…e-commit-msg-regex

Prevent bad matches when running imperative check

Merge pull request sjparkinson#43 from shadowhand/patch-1

Do not abort commits during message review

Merge pull request sjparkinson#42 from shadowhand/feature/commit-mess…

…age-review

Add commit message review

Merge pull request sjparkinson#41 from shadowhand/feature/flexible-re…

…view-interface

Add support for non-file based reviews

Use json output with codesniffer.

Updated joetannenbaum/climate to league/climate.

Removed php-cs-fixer dependency, added phpcs travis check.

Also fixed PSR2 issue in GitVersionControl.

Fix hook install command when the hook doesn't exist.