Update LookupTables.java

src/main/java/bouncingshape/LookupTables.java

@@ -7,7 +7,7 @@ public class LookupTables {
 	
 	public static void init(){
 		
-		//产生一个用于快速获得三角函数值的查找表 
+		//produce a lookup table for fast trigonometric functions calculation
 		sin = new float[361];
 		cos = new float[361];
 		for(int i = 0; i < 361; i ++){