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+The Spine runtime for Unity comes with an example project which has "spineboy" walking. When clicked, he jumps and the transition to/from walking/jumping is blended smoothly. Use the instructions below for your version of Unity.
+
+# Unity 4
+
+1. Delete the "Assets/examples/Unity 3.5" directory.
+1. Open the "Assets/examples/Unity 4/spineboy.unity" scene.
+
+# Unity 3.5.7
+
+1. Delete the "Assets/examples/Unity 4" directory.
+1. Open the "Assets/examples/Unity 3.5/spineboy.unity" scene.
+
+Unity 3.5.7 stores metadata in the project files, which are not included. References in the project need to be fixed up:
+
+1. In the Project, select "examples/Unity 3.5/spineboy/spineboy Atlas".
+1. In the Inspector, set the material to "spineboy".
+1. In the Project, select "examplesUnity 3.5/spineboy/spineboy Skeleton Data".
+1. In the Inspector, set the atlas to "spineboy Atlas".
+1. In the Hierarchy, select "spineboy".
+1. In the Inspector, set the skeleton component's skeleton data to "spineboy Skeleton Data".
+1. In the Inspector, set the missing script to "SpineboyComponent".