add builtIn rasterizer to read me

Signed-off-by: Stefan Niederhauser <[email protected]>

Author: nidi3

graphviz-java/example/ex5p.pdf

@@ -88,5 +88,7 @@ void builtInRasterizer() throws IOException {
         final Graphviz g = Graphviz.fromGraph(graph().with(node("a").link("b")));
         g.basedir(new File("example")).rasterize(Rasterizer.builtIn("pdf")).toFile(new File("target/builtIn"));
         assertTrue(out.exists());
+        end();
+        init();
     }
 }

graphviz-java/src/test/java/guru/nidi/graphviz/engine/RendererTest.java

@@ -147,6 +147,7 @@ void ex4() throws IOException {
     }
 
     @Test
+    @DisabledIfEnvironmentVariable(named = "CI", matches = ".*")
     void ex5() throws IOException {
         //## config
         Graphviz.useEngine(new GraphvizCmdLineEngine()); // Rasterizer.builtIn() works only with CmdLineEngine
@@ -159,6 +160,8 @@ void ex5() throws IOException {
         String json = viz.engine(Engine.NEATO).render(Format.JSON).toString();
         BufferedImage image = viz.render(Format.PNG).toImage();
         //## end
+        end();
+        init();
     }
 
     @Test