Delegate 'Continuous Integration' section to awesome-sysadmin

Part of https://github.com/Kickball/awesome-selfhosted/issues/127
This can be merged once https://github.com/n1trux/awesome-sysadmin/pull/302 is accepted

README.md

@@ -1236,15 +1236,7 @@ See **[Ticketing](#ticketing)**
 
 ### Continuous Integration
 
-- [Concourse](https://concourse.ci/) - Concourse is a CI tool that treats pipelines as first class objects and containerizes every step along the way. ([Demo](https://ci.concourse.ci/), [Source Code](https://github.com/concourse/concourse)) `Apache-2.0` `Go`
-- [drone](https://drone.io/) - Drone is a Continuous Delivery platform built on Docker, written in Go. ([Source Code](https://github.com/drone/drone)) `Apache-2.0` `Go`
-- [Factor](http://www.factor.io/) - It's like IFTTT (if-this-then-that) for Dev and DevOps. ([Source Code](https://github.com/factor-io/factor)) `MIT` `Ruby`
-- [GolangCI](https://golangci.com/) - Open Source automated code review service for Go integrated with GitHub pull requests. ([Source Code](https://github.com/golangci/golangci)) `AGPL-3.0` `Go`
-- [Jenkins](https://jenkins-ci.org/) - Continuous Integration Server. ([Source Code](https://github.com/jenkinsci/jenkins/)) `MIT` `Java`
-- [Laminar](http://laminar.ohwg.net) - Fast, lightweight, simple and flexible Continuous Integration. ([Source Code](https://github.com/ohwgiles/laminar)) `GPL-3.0` `C++`
-- [PHP Censor](https://github.com/php-censor/php-censor) - Open source self-hosted continuous integration server for PHP projects. `BSD-2-Clause` `PHP`
-- [PHPCI](https://www.phptesting.org/) - Free and open source continuous integration specifically designed for PHP. ([Source Code](https://github.com/block8/phpci)) `BSD-2-Clause` `PHP`
-- [Strider](http://strider-cd.github.io/) - Open Source Continuous Deployment / Continuous Integration platform. ([Source Code](https://github.com/Strider-CD/strider)) `MIT` `Nodejs`
+_See [awesome-sysadmin/Continuous Integration & Continuous Deployment](https://github.com/n1trux/awesome-sysadmin#continuous-integration--continuous-deployment)_
 
 ### FaaS/Serverless