diff --git a/Readme.playground/Contents.swift b/Readme.playground/Contents.swift
new file mode 100644
index 0000000..7a938c5
--- /dev/null
+++ b/Readme.playground/Contents.swift
@@ -0,0 +1,67 @@
+import TRX
+import UIKit
+
+struct ExampleObject {
+  var value: Double
+}
+
+var object = ExampleObject(value: 0)
+var anOtherObject = object
+
+struct ExampleLayer {
+  var position: CGPoint
+}
+
+var layer = ExampleLayer(position: CGPoint.zero)
+var myView = UIView()
+var someFrame = CGRect()
+      
+Tween(from: 0, to: 20, time: 0.3) {
+  object.value = $0
+}.start()
+
+1.trx(to: 20) { object.value = $0 }.start()
+
+Tween(from: CGPoint.zero, to: CGPoint(x: 20, y: 15), time: 0.3) {
+  layer.position = $0
+}.start()
+
+Tween(from: 0,
+      to: 1,
+      time: 0.3,
+      delay: 0.1,
+      ease: Ease.Elastic.easeOut,
+      key: "MyOwnKey",
+      onStart: { print("start") },
+      onComplete: { done in print("complete and done: \(done)") }) { value in
+        object.value = value
+}.start()
+
+TimeLine(tweens: [
+  1.trx(to: 20) { object.value = $0 },
+  30.trx(to: 40) { object.value = $0 },
+  40.trx(to: 50) { object.value = $0 },
+]).start()
+
+
+let timeline: TimeLine = [
+  1.trx(to: 20) { object.value = $0 }: 0,
+  30.trx(to: 40) { anOtherObject.value = $0 }: -0.5,
+  40.trx(to: 50) { anOtherObject.value = $0 }: -0.5
+]
+timeline.start()
+
+let tween = Tween(from: 0,
+                  to: 1,
+                  time: 0.5) { print($0) }
+      
+tween.scale = 2 // duration: 1s
+tween.duration = 2.0 // scale: 4
+
+myView.trxCenter(to: CGPoint(x: 10, y: 15))
+
+myView.trxCenter(from: CGPoint.zero)
+
+myView.trxFrame(to: someFrame)
+
+myView.trxFrame(to: someFrame)
diff --git a/Readme.playground/contents.xcplayground b/Readme.playground/contents.xcplayground
new file mode 100644
index 0000000..5da2641
--- /dev/null
+++ b/Readme.playground/contents.xcplayground
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<playground version='5.0' target-platform='ios'>
+    <timeline fileName='timeline.xctimeline'/>
+</playground>
\ No newline at end of file
diff --git a/TRX.xcodeproj/project.pbxproj b/TRX.xcodeproj/project.pbxproj
index b9a1095..066d200 100644
--- a/TRX.xcodeproj/project.pbxproj
+++ b/TRX.xcodeproj/project.pbxproj
@@ -117,6 +117,7 @@
 		6699A1971D51FE3400F530F6 /* Morphable+CATransform3D.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = "Morphable+CATransform3D.swift"; sourceTree = "<group>"; };
 		669DCE2D1D6B240B0005CB15 /* Morphable+CGAffineTransformSpec.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = "Morphable+CGAffineTransformSpec.swift"; sourceTree = "<group>"; };
 		669DCE2F1D6B24290005CB15 /* Morphable+CATransform3DSpec.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = "Morphable+CATransform3DSpec.swift"; sourceTree = "<group>"; };
+		66DB23EB1DBE4A260093096B /* Readme.playground */ = {isa = PBXFileReference; lastKnownFileType = file.playground; path = Readme.playground; sourceTree = "<group>"; };
 		66E5EC391D461C3C00C2B1DA /* Tween.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = Tween.swift; sourceTree = "<group>"; };
 		66E5EC3B1D461C3C00C2B1DA /* TimeLine.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = TimeLine.swift; sourceTree = "<group>"; };
 		66E5EC3D1D461C3C00C2B1DA /* Tween+Double.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = "Tween+Double.swift"; sourceTree = "<group>"; };
@@ -242,6 +243,7 @@
 		66D55E8D1D45FA7400A4DA1C = {
 			isa = PBXGroup;
 			children = (
+				66DB23EB1DBE4A260093096B /* Readme.playground */,
 				663E814A1D45FCBD00130EB5 /* Sources */,
 				667AEFD41D460A7D004E291C /* TRXTests */,
 				663E81421D45FC6F00130EB5 /* Products */,