Added more of the gltf sample models

https://github.com/KhronosGroup/glTF-Sample-Models
We need to make it working for all of them.

examples/models/resources/gltf/AnimatedTriangle.gltf

@@ -0,0 +1,118 @@
+{
+  "scene" : 0,
+  "scenes" : [
+    {
+      "nodes" : [ 0 ]
+    }
+  ],
+  
+  "nodes" : [
+    {
+      "mesh" : 0,
+      "rotation" : [ 0.0, 0.0, 0.0, 1.0 ]
+    }
+  ],
+  
+  "meshes" : [
+    {
+      "primitives" : [ {
+        "attributes" : {
+          "POSITION" : 1
+        },
+        "indices" : 0
+      } ]
+    }
+  ],
+  
+  "animations": [
+    {
+      "samplers" : [
+        {
+          "input" : 2,
+          "interpolation" : "LINEAR",
+          "output" : 3
+        }
+      ],
+      "channels" : [ {
+        "sampler" : 0,
+        "target" : {
+          "node" : 0,
+          "path" : "rotation"
+        }
+      } ]
+    }
+  ],
+
+  "buffers" : [
+    {
+      "uri" : "data:application/octet-stream;base64,AAABAAIAAAAAAAAAAAAAAAAAAAAAAIA/AAAAAAAAAAAAAAAAAACAPwAAAAA=",
+      "byteLength" : 44
+    },
+    {
+      "uri" : "data:application/octet-stream;base64,AAAAAAAAgD4AAAA/AABAPwAAgD8AAAAAAAAAAAAAAAAAAIA/AAAAAAAAAAD0/TQ/9P00PwAAAAAAAAAAAACAPwAAAAAAAAAAAAAAAPT9ND/0/TS/AAAAAAAAAAAAAAAAAACAPw==",
+      "byteLength" : 100
+    }
+  ],
+  "bufferViews" : [
+    {
+      "buffer" : 0,
+      "byteOffset" : 0,
+      "byteLength" : 6,
+      "target" : 34963
+    },
+    {
+      "buffer" : 0,
+      "byteOffset" : 8,
+      "byteLength" : 36,
+      "target" : 34962
+    },
+    {
+      "buffer" : 1,
+      "byteOffset" : 0,
+      "byteLength" : 100
+    }
+  ],
+  "accessors" : [
+    {
+      "bufferView" : 0,
+      "byteOffset" : 0,
+      "componentType" : 5123,
+      "count" : 3,
+      "type" : "SCALAR",
+      "max" : [ 2 ],
+      "min" : [ 0 ]
+    },
+    {
+      "bufferView" : 1,
+      "byteOffset" : 0,
+      "componentType" : 5126,
+      "count" : 3,
+      "type" : "VEC3",
+      "max" : [ 1.0, 1.0, 0.0 ],
+      "min" : [ 0.0, 0.0, 0.0 ]
+    },
+    {
+      "bufferView" : 2,
+      "byteOffset" : 0,
+      "componentType" : 5126,
+      "count" : 5,
+      "type" : "SCALAR",
+      "max" : [ 1.0 ],
+      "min" : [ 0.0 ]
+    },
+    {
+      "bufferView" : 2,
+      "byteOffset" : 20,
+      "componentType" : 5126,
+      "count" : 5,
+      "type" : "VEC4",
+      "max" : [ 0.0, 0.0, 1.0, 1.0 ],
+      "min" : [ 0.0, 0.0, 0.0, -0.707 ]
+    }
+  ],
+  
+  "asset" : {
+    "version" : "2.0"
+  }
+  
+}

examples/models/resources/gltf/LICENSE

@@ -1,11 +1,20 @@
 Rigged Figure model has been created by Cesium (https://cesium.com/cesiumjs/),
 and licensed as Creative Commons Attribution 4.0 International License.
 
-Check for details: http://creativecommons.org/licenses/by/4.0/
+Box Animated model has been created by Cesium (https://cesium.com/cesiumjs/)
+and is licensed as Creative Commons Attribution 4.0 International License
 
 Avocado model is provided by Microsoft
 and licensed as CC0 Universal Public Domain
 
-Check for details: https://creativecommons.org/publicdomain/zero/1.0/
+Animated Morph Cube model is provided by Microsoft
+and licensed as CC0 Universal Public Domain
 
+Animated Triangle model is licensed as CC0 Universal Public Domain
+
+Gearbox Assy model has been provided by Okino Computer Graphics, using Okino Polytrans Software.
+no license information was provided
+
+Check for details on CC0: https://creativecommons.org/publicdomain/zero/1.0/
+Check for details on CC4: http://creativecommons.org/licenses/by/4.0/
 GLTF sample models for testing are taken from: https://github.com/KhronosGroup/glTF-Sample-Models/