Fix minimum supported PHPUnit version

- Use PHPUnit >= 4.5 (first that properly reports version, and which includes
  prophecy).
- Use composer autoloader as phpunit bootstrap.

Author: weierophinney

composer.json

@@ -40,7 +40,7 @@
         "zendframework/zend-servicemanager": "^2.7.5 || ^3.0.3",
         "zendframework/zend-uri": "^2.5",
         "fabpot/php-cs-fixer": "1.7.*",
-        "phpunit/PHPUnit": "~4.0"
+        "phpunit/phpunit": "^4.5"
     },
     "suggest": {
         "zendframework/zend-authentication": "Zend\\Authentication component",

phpunit.xml.dist

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:noNamespaceSchemaLocation="./vendor/phpunit/phpunit/phpunit.xsd"
-         bootstrap="./test/bootstrap.php"
+         bootstrap="./vendor/autoload.php"
          colors="true">
     <testsuites>
         <testsuite name="zend-view Test Suite">