Merge pull request #42 from javagl/master

Fixed wording for updated skinning data

gltfTutorial/gltfTutorial_020_Skins.md

@@ -161,7 +161,7 @@ The `"JOINTS_0"` attribute refers to an accessor that contains the indices of th
     Vertex 8:  0, 1, 0, 0,
     Vertex 9:  0, 1, 0, 0,
 
-This means that every vertex should be influenced by joint 0 and joint 1. (The last 2 components of each vector are ignored here. If there were multiple joints, then one entry of this accessor could, for example, contain
+This means that every vertex should be influenced by joint 0 and joint 1, except for the two vertices at the bottom. (The last 2 components of each vector are ignored here. If there were multiple joints, then one entry of this accessor could, for example, contain
 
     3, 1, 8, 4,