Basic NPC loading (half done)

data/chunks/chunk_0_0.json

@@ -1,6 +1,6 @@
 {
   "chunk": {
-    "position": [ 1, 1 ],
+    "position": [ 0, 0 ],
     "baseLayer": [
       [ 1, 1, 1, 1,  1, 1, 1, 1 ],
       [ 1, 1, 1, 1,  1, 1, 1, 1 ],
@@ -22,6 +22,11 @@
       [ 1, 1, 1, 1,  1, 1, 1, 1 ]
     ],
     "entities": [
+      {
+        "type": "npc",
+        "x": "3",
+        "y": "3"
+      }
     ],
     "triggers": [
     ]