bug KnpLabs#1071 dont require encoding (gemal)

This PR was squashed before being merged into the 3.4.x-dev branch.

Discussion
----------

fixes KnpLabs#1042

Commits
-------

89c71de dont require encoding
35c97c2 Update BlobsTest.php

Author: gemal

lib/Github/Api/GitData/Blobs.php

@@ -59,8 +59,8 @@ public function show($username, $repository, $sha)
      */
     public function create($username, $repository, array $params)
     {
-        if (!isset($params['content'], $params['encoding'])) {
-            throw new MissingArgumentException(['content', 'encoding']);
+        if (!isset($params['content'])) {
+            throw new MissingArgumentException('content');
         }
 
         return $this->post('/repos/'.rawurlencode($username).'/'.rawurlencode($repository).'/git/blobs', $params);

test/Github/Tests/Api/GitData/BlobsTest.php

@@ -68,21 +68,6 @@ public function shouldCreateBlob()
         $this->assertEquals($expectedValue, $api->create('l3l0', 'l3l0repo', $data));
     }
 
-    /**
-     * @test
-     */
-    public function shouldNotCreateBlobWithoutEncoding()
-    {
-        $this->expectException(MissingArgumentException::class);
-        $data = ['content' => 'some cotent'];
-
-        $api = $this->getApiMock();
-        $api->expects($this->never())
-            ->method('post');
-
-        $api->create('l3l0', 'l3l0repo', $data);
-    }
-
     /**
      * @test
      */