add composer

Added as a dependencies:
 - PHPUnit to allow run the test suit
 - PHP CodeSniffer to allow check the code style
run test suit using composer autoload

Other improvements:
 - Move phpunit.xml to phpunit.xml.dist
 - Remove deprecated Tests/bootstrap.php
improve documentation about the code style
run composer install on travis.ci
Merge pull request #64 from gmsantosxl/master

Add composer on .travis.yml
Implement InversionOfControl aware DependencyInjection
moved texts to README.md
Typo on comment
Merge pull request #65 from SephVelut/patch-1

Typo on comment
Added Service Locator pattern
Removed the license in test file
Delegation pattern
Fix test
Update readme.md
Fix codesniffer errors
Update ArrayConfig.php

I think that the sing ";" show error
Merge pull request #70 from cmartinez92/patch-1

Update ArrayConfig.php