init commit

test/parse/meta_block.golden

@@ -0,0 +1,16 @@
+(program	
+ (meta
+  [(:= name LitBasic) 
+   (:= category Scene)])
+
+ (properties
+  [(:= color float4)])
+
+ (fun vertex vs_main -> float3 (@position)
+  [(:= pos float3 (@position)) 
+   (:= uv float2 (@uv))] 
+  (return pos))
+
+ (fun pixel ps_main -> float4 (@target0)
+  [] 
+  (return properties.color)))