docs: add @ljharb to the teams (#47)

Related #44

Author: UlisesGascon

README.md

@@ -35,6 +35,7 @@ The Security Working Group is composed of two groups of members: the Security Tr
 - [Chris de Almeida](https://github.com/ctcpip)
 - [Íñigo Marquínez Prado](https://github.com/inigomarquinez)
 - [Jean Burellier](https://github.com/sheplu)
+- [Jordan Harband](https://github.com/ljharb)
 - [Jon Church](https://github.com/jonchurch)
 - [Marco Ippolito](https://github.com/marco-ippolito)
 - [Rafael Gonzaga](https://github.com/RafaelGSS)
@@ -47,6 +48,7 @@ The Security Working Group is composed of two groups of members: the Security Tr
 - [Chris de Almeida](https://github.com/ctcpip)
 - [Íñigo Marquínez Prado](https://github.com/inigomarquinez)
 - [Jean Burellier](https://github.com/sheplu)
+- [Jordan Harband](https://github.com/ljharb)
 - [Jon Church](https://github.com/jonchurch)
 - [Marco Ippolito](https://github.com/marco-ippolito)
 - [Rafael Gonzaga](https://github.com/RafaelGSS)