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README.md

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+# Helper class for Jenkins
+
+This repo add functionality for automate building with `platforms.json` configuration.
+
+## Setup
+
+You should add `PLATFORMS_GIT` environment to your Jenkins with url to git repo, which
+contains single `platforms.json` file.
+
+Next you should register this library in Jenkins -> System settings -> Global Pipeline Libraries:
+* Library name: `SHS`
+* Default version: `master`
+* Project Repository: `https://git.shs.tools/SHS/jenkins_lib.git`
+
+## Usage
+
+```
+@Library('SHS') _
+node {
+    def pl = new org.SHS.Platforms(this)
+    pl.get()
+    pl.forEach ({ dist ->
+        print("iterate ${dist.docker_image}")
+    }, "-test")
+}
+```
+
+`dist` is JSON element of current platform
+`"-test"` is a stage suffix