Note about spine-torque2d.

spine-torque2d/README.md

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+# spine-torque2d
+
+The Spine runtime for Torque2D is currently integrated into Torque2D itself:
+
+https://github.com/GarageGames/Torque2D/tree/spine
+
+Unfortunately, it is also a bit out of date. An updated Torque2D Spine runtime is planned.