add readme

readme.md

+# CI Server #
+
+Free software and Open Source from University of Bern :: IML - Institute of Medical Education
+
+📄 Source: <https://git-repo.iml.unibe.ch/iml-open-source/imldeployment> \
+📜 License: GNU GPL 3.0 \
+📖 Docs: TODO
+
+- - -
+
+## Description ##
+
+CI node that checks out projects from git repositories and builds an deployable archive.
+The archives can be synched to multiple deployment targets e.g. puppet master or a protected software archive.
+
+## Related projects ##
+
+* CI package server <https://git-repo.iml.unibe.ch/iml-open-source/ci-pkg>
+* Deployment client written in bash <https://git-repo.iml.unibe.ch/iml-open-source/imldeployment-client>
+
+## Features ##
+
+* API to start a build from somewhere, e.g. from a devops workplace or Gitlab server
+* checkout from git via SSH with multiple ssh keys (can be extended with a plugin)
+* build has hooks to customize build process
+* In our institute it builds projects written in
+  * PHP
+  * NodeJS - using NVM for custom Node versions
+  * Ruby - using RVM for custom Ruby versions
+* sync built archives to deploy systems
+* trigger rollout via ssh command or AWX API call (can be extended with a plugin)
+* receives install status 
+* sends messages (email, Slack)