Add twitter account info

README.md

@@ -57,3 +57,7 @@ Pixela is accepting support by [Patreon](https://www.patreon.com/pixe_la).
 Funding from supporters is used to develop, renovate and maintain for Pixela.
 
 For details, please see [How to support Pixela by Patreon ／ Use Limited Features](https://github.com/a-know/Pixela/wiki/How-to-support-Pixela-by-Patreon-%EF%BC%8F-Use-Limited-Features).
+
+## Contact
+- [Pixela Official Twitter Account](https://twitter.com/pixela_bird)
+- [Pixela admin Twitter Account](https://twitter.com/a_know)