Fixed syntax error *fail*

Author: sebastianfeldmann

composer.json

@@ -27,7 +27,7 @@
         "ext-dom": "*",
         "ext-json": "*",
         "ext-spl": "*",
-        "dropbox/dropbox-sdk": "1.1.*"
+        "dropbox/dropbox-sdk": "1.1.*",
         "phpseclib/phpseclib": "2.0.*@dev",
         "phpunit/php-timer": "~1.0.2",
         "sebastian/environment": "~1.1",