adds gitignore
Update tests to split out Analytics.js and GA.js
Return null when scripts will not render anything
Move display feature test logic to script class

Since these features are now split out in the different helpers,
test the Gajs code in the gajs helper class and add tests for the
universal testing.
Fix ga.js test for loading from Google as subdomains are removed
Update universal code with ecommerce tests
Repair code mock for view helper tests
Use phpunit from composer.json to test
Use php codesniffer to validate coding standards
Fix CS with newlines at EOF
Merge pull request #31 from juriansluiman/feature/unit-tests

Unit tests for ga.js and analytics.js
Merge pull request #38 from basz/feature/ignore

adds gitignore
Improve installation and configuration instructions
Allow to configure all individual variables
Remove double installation instructions
Merge pull request #39 from juriansluiman/feature/doc-improvements

Documentation improvements
Fix code examples with constructor arguments
Merge pull request #40 from juriansluiman/hotfix/docs-php-examples

Fix code examples with constructor arguments
Define container name in configuration file
Merge pull request #41 from juriansluiman/feature/container-in-config

Define container name in configuration file

closes #33