Update index

Author: iocanel

README.md

@@ -13,6 +13,10 @@ A repository for my presnetations
 - [Voxxed Thessaloniki 2016: Getting started with microservices on Kubernetes](https://github.com/iocanel/presentations/blob/master/2016-voxxed@thessaloniki-getting-started-with-microservices-on-kubernetes)
 - [JBCNConf 2017: Spring Cloud Kubernetes](https://github.com/iocanel/presentations/blob/master/2017-jbcnconf-spring-cloud-kubernetes)
 - [Jenkins World 2017: Making the best out of Jenkins on Kubernetes and Openshift](https://github.com/iocanel/presentations/blob/master/2017-jenkinsworld-making-the-best-out-of-jenkins-on-kubernetes-and-openshift)
+- [Voxxed Athens 2019: Get your hands dirty with Quarkus](https://github.com/iocanel/presentations/blob/master/2019-voxxed-athens-quarkus-deep-dive)
+- [Java Days Sofia 2019: Quarkus Workshop](https://github.com/iocanel/presentations/blob/master/2019-java2days-sofia-quarkus-workshop)
+- [JHUG 2020: Contributing to OSS](https://github.com/iocanel/presentations/blob/master/2020-jhub-contributing-to-oss)
+
 ## Other
 - [Fuse Face2Face 2013: What's new in Fuse Fabric 7.3](https://github.com/iocanel/presentations/blob/master/2013-fusef2f-whats-new-in-fuse-fabric-7-3)
 - [Fuse Engineering Meeting May 2017: Syndesis CI/CD](https://github.com/iocanel/presentations/blob/master/2017-fuseeng-syndesis-ci-cd)