2 files changed, 7 insertions, 3 deletions
diff --git a/README.md b/README.md
index 44a6749..769289d 100644
--- a/README.md
+++ b/README.md
@@ -8,8 +8,8 @@ Usage
 -----
 
 ```js
-var lsys = new LSystem('F', { 'F' : 'F-F+FF' });
-var tree = lsys.iterate(2);
+var lsys = new LSystem('F', { 'F' : 'F-F+FF' }).iterate(2);
+var tree = lsys.print();
 console.log(tree);  // F-F+FF-F-F+FF+F-F+FFF-F+FF
 var coords = lsys.draw(Math.PI / 2);  // draw tree with alpha as 90 degrees
 console.log(coords);  // [[0,0,0], [0,1,0], [1,1,0], ...
diff --git a/lsys.js b/lsys.js
index b102107..ffa4479 100644
--- a/lsys.js
+++ b/lsys.js
@@ -9,6 +9,10 @@ function LSystem(axiom, rules) {
         return rules[c] || c;
       });
     }
+    return this;
+  };
+
+  this.print = function() {
     return this.tree;
   };
 
@@ -125,7 +129,7 @@ function LSystem(axiom, rules) {
 
   this.reset = function() {
     this.tree = axiom;
-    return this.tree;
+    return this;
   };
 
   this.debug = function() {