Remove Twitter reference

Author: streichsbaer

README.md

@@ -70,13 +70,9 @@ Supported by: [GuardRails.io](https://www.guardrails.io)
 
 # Contributing
 
-Found an awesome project, package, article, other type of resources related to PHP Security? Send a pull request!
+Found an awesome project, package, article, other type of resources related to PHP Security? Submit a pull request!
 Just follow the [guidelines](/CONTRIBUTING.md). Thank you!
 
-Say *hi* on [Twitter](https://twitter.com/s_streichsbier)
-
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-
 ## Inspiration
 
 This awesome list was inspired by [awesome-nodejs-security](https://github.com/lirantal/awesome-nodejs-security) and [awesome-ruby-security](https://github.com/pxlpnk/awesome-ruby-security).