bug #142 Make sure we consider case when updating title (Nyholm)

This PR was merged into the master branch.

Discussion
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Make sure we consider case when updating title

Just a small bugfix. To avoid names like:

```
[TwigBundle] [twigbundle] Fixed syntax error in config
```

#SymfonyHackday

Commits
-------

3687b67 Make sure we consider case when updating title

Author: weaverryan

src/Subscriber/AutoUpdateTitleWithLabelSubscriber.php

@@ -50,11 +50,11 @@ public function onPullRequest(GitHubEvent $event)
             if ('dddddd' === strtolower($label['color'])) {
                 $validLabels[] = $label['name'];
                 // Remove label name from title
-                $prTitle = str_replace('['.$label['name'].']', '', $prTitle);
+                $prTitle = str_ireplace('['.$label['name'].']', '', $prTitle);
 
                 // Remove label aliases from title
                 foreach ($this->labelExtractor->getAliasesForLabel($label['name']) as $alias) {
-                    $prTitle = str_replace('['.$alias.']', '', $prTitle);
+                    $prTitle = str_ireplace('['.$alias.']', '', $prTitle);
                 }
             }
         }

tests/Subscriber/AutoUpdateTitleWithLabelSubscriberTest.php

@@ -65,6 +65,27 @@ public function testOnPullRequestLabeled()
         $this->assertSame('[Console][FrameworkBundle] [bar] Foo', $responseData['new_title']);
     }
 
+    public function testOnPullRequestLabeledCaseInsensitive()
+    {
+        $event = new GitHubEvent([
+            'action' => 'labeled',
+            'number' => 1234,
+            'pull_request' => [
+                'title' => '[PHPunitbridge] Foo',
+                'labels' => [
+                    ['name' => 'PhpUnitBridge', 'color' => 'dddddd'],
+                ],
+            ],
+        ], $this->repository);
+
+        $this->dispatcher->dispatch($event, GitHubEvents::PULL_REQUEST);
+        $responseData = $event->getResponseData();
+
+        $this->assertCount(2, $responseData);
+        $this->assertSame(1234, $responseData['pull_request']);
+        $this->assertSame('[PhpUnitBridge] Foo', $responseData['new_title']);
+    }
+
     public function testOnPullRequestLabeledWithExisting()
     {
         $event = new GitHubEvent([