Got NetScript working asyhcronously with Promises! Only for loops have been tested though. Still need to test while loops and ifs. While loops should work if the for loops do, idk about if statements though. If statements aren't a high priority right now though

src/Constants.js

@@ -1,5 +1,8 @@
 CONSTANTS = {
 	//Max level for any skill. Determined by max numerical value in javascript and the skill level
 	//formula in Player.js
-	MaxSkillLevel: 		1796,
+	MaxSkillLevel: 			1796,
+	
+	//Time (ms) it takes to run one operation in Netscript.  
+	CodeInstructionRunTime:	1500, 
 }