implemented Commits::approve (API 2.0)

Author: vimishor

docs/repositories/commits.md

@@ -26,6 +26,11 @@ $commits->all($account_name, $repo_slug, array(
 $commits->get($account_name, $repo_slug, $commitSHA1);
 ```
 
+### Approve a commit: (API 2.0)
+```php
+$commits->approve($account_name, $repo_slug, $commitSHA1);
+```
+
 ----
 
 #### Related:

lib/Bitbucket/API/Repositories/Commits.php

@@ -58,4 +58,20 @@ public function get($account, $repo, $revision)
             sprintf('repositories/%s/%s/commit/%s', $account, $repo, $revision)
         );
     }
+
+    /**
+     * Approve a commit
+     *
+     * @access public
+     * @param  string           $account  The team or individual account owning the repository.
+     * @param  string           $repo     The repository identifier.
+     * @param  string           $revision A SHA1 value for the commit.
+     * @return MessageInterface
+     */
+    public function approve($account, $repo, $revision)
+    {
+        return $this->getClient()->setApiVersion('2.0')->post(
+            sprintf('repositories/%s/%s/commit/%s/approve', $account, $repo, $revision)
+        );
+    }
 }

test/Bitbucket/Tests/API/Repositories/CommitsTest.php

@@ -60,4 +60,19 @@ public function testGetSingleCommitInfo()
 
         $this->assertEquals($expectedResult, $actual);
     }
+
+    public function testApproveACommit()
+    {
+        $endpoint       = 'repositories/gentle/eof/commit/SHA1/approve';
+
+        $client = $this->getHttpClientMock();
+        $client->expects($this->once())
+            ->method('post')
+            ->with($endpoint);
+
+        /** @var \Bitbucket\API\Repositories\Commits $commit */
+        $commit   = $this->getClassMock('Bitbucket\API\Repositories\Commits', $client);
+
+        $commit->approve('gentle', 'eof', 'SHA1');
+    }
 }