Behat/MinkExtension — pull request #26 by jubianchi (2012-08-12 19:41:22+00:00)
Title: Configure Mink extension through a dedicated environment variable

Behat lets us configure it with an environment variable through which we can also configure extensions :

```shell
$ export BEHAT_PARAMS="extensions[mink_extension.phar][base_url]=http://localhost"
```

This has a main drawback to me : the syntax is not generic as it needs to be updated if the extension loading strategy changes :

```shell
$ export BEHAT_PARAMS="extensions[vendor/behat/mink-extension/init.php][base_url]=http://localhost"
$ export BEHAT_PARAMS="extensions[Behat\MinkExtension\Extension][base_url]=http://localhost"
```

This PR allows users to configure MinkExtension through a dedicated environment variable MINK_EXTENSION_PARAMS :

```shell
$ export MINK_EXTENSION_PARAMS="base_url=http://localhost&browser_name=firefox&javascript_session=selenium2"
```