add POJOs for json deserialization of TileMeshCollection data

src/com/blarg/gdx/tilemap3d/tilemesh/JsonMaterialMapping.java

@@ -0,0 +1,10 @@
+package com.blarg.gdx.tilemap3d.tilemesh;
+
+public class JsonMaterialMapping {
+	public String name;
+	public int tile;
+	public float minU;
+	public float maxU;
+	public float minV;
+	public float maxV;
+}

src/com/blarg/gdx/tilemap3d/tilemesh/JsonTileDefinition.java

@@ -0,0 +1,20 @@
+package com.blarg.gdx.tilemap3d.tilemesh;
+
+import com.badlogic.gdx.graphics.Color;
+import com.badlogic.gdx.math.Vector3;
+
+import java.util.ArrayList;
+
+public class JsonTileDefinition {
+	public String model;
+	public String collisionModel;
+	public String collisionShape;
+	public ArrayList<String> opaqueSides;
+	public int light;
+	public boolean alpha;
+	public float translucency;
+	public Color color;
+	public Vector3 scaleToSize;
+	public Vector3 positionOffset;
+	public Vector3 collisionPositionOffset;
+}

src/com/blarg/gdx/tilemap3d/tilemesh/JsonTileMeshCollection.java

@@ -0,0 +1,8 @@
+package com.blarg.gdx.tilemap3d.tilemesh;
+
+import java.util.ArrayList;
+
+public class JsonTileMeshCollection {
+	public ArrayList<JsonMaterialMapping> materials;
+	public ArrayList<JsonTileDefinition> tiles;
+}