Replace the call to PHPUnit_TextUI_Command->run by shell_exec

Fix running with PHPUnit XML Configuration File

To load xml bootstrap file, like in this configuration :

```
<?xml version="1.0" encoding="UTF-8"?>
<phpunit bootstrap="bootstrap.php" >

	<testsuites>
		<testsuite name="Sincronizar">
			<directory suffix=".php">tests</directory>
		</testsuite>
	</testsuites>

	<!-- This is required for VPU to work correctly -->
	<listeners>
		<listener class="PHPUnit_Util_Log_JSON"></listener>
	</listeners>

</phpunit>
```

Update VPU.php

#150 DBUnit composer package added as suggested dependencies.

Running test returned error Serialization of 'Closure' is not allowed

Added Laravel 5.2 support

Added Laravel 5.2 support

Enabled phpdox and fixed some code smells

#172

…Error: Cannot create property 'passedPercentage' on string 'nofiles'

fixed by changing to single equal

Type Error: Cannot create property 'passedPercentage' on string 'nofiles'

…% compliant with promises.

the $http's.success, $http's.error are replaced  by $http's.then()

Promise - Replace the deprecated $http.success by $http.then

No php7 support at this time