* As we can use returns instead of local variable.
* This will make it easier to see the return value of the method.

* Do not use else, as hinted by phpmd, use return instead.

* Remove duplicate empty line.
* Sort namespace imports alphabetical.

FEAUTRE: Provide a basic documentation

Closes #8

See merge request !27

FEATURE: Provide branch alias

Closes #31

See merge request !28

FEATURE: Gitlab ci initialized (including phpunit test)

Closes #25

See merge request !26

TASK: Rename primary composer plugin type

Closes #24

See merge request !24

# Conflicts:
#   README.md

TASK: Remove travis-ci configuration

Closes #26

See merge request !23

Readded old composer package type `php-codesniffer-standards`.
Will be removed before the first stable release.

Added `phpcodesniffer-standards` (plural) as also supported
composer package type.

As requests in #24 i renamed the primary composer plugin type
from `php-codesniffer-standards` to `phpcodesniffer-standard`
for compatibility reasons to other projects.

Resolves #26

Feature/17 write status messages to stdout

Bugfix/18 installer is installed seems not to work

Feature/13 php54 requirements error

Feature/11 integrate phpunit