Add Jenkinsfile (#1151)

Co-authored-by: Richie Bendall <richiebendall@gmail.com>
Co-authored-by: MrBrain295 <66077254+MrBrain295@users.noreply.github.com>

j/Jenkinsfile

@@ -0,0 +1,10 @@
+pipeline {
+    agent any
+    stages {
+        stage('Print Message') {
+            steps {
+                echo 'Hello World'
+            }
+        }
+    }
+}

readme.md

@@ -8,7 +8,7 @@ Thanks to everyone who continues to contribute; new languages are created every
 Make sure to see [contributing.md](/contributing.md) for instructions on contributing to the project!
 
 <!--Languages start-->
-## Languages (826 total)
+## Languages (827 total)
 
 * [!@#$%^&*()_+](%23/%21%40%23%24%25%5E%26%E2%88%97%28%29_%2B)
 * [():;#?!](%23/%28%29%3A%3B%23%3F%21)
@@ -453,6 +453,7 @@ Make sure to see [contributing.md](/contributing.md) for instructions on contrib
 * [Java](j/Java.java)
 * [JavaScript](j/JavaScript.js)
 * [Jelly](j/Jelly.j)
+* [Jenkins](j/Jenkinsfile)
 * [Jess](j/Jess.cpl)
 * [JScript](j/JScript.js)
 * [JSFuck](j/JSFuck.js)