docs: documented bind Enviroment

packages/meteor/dynamics_nodejs.js

@@ -200,6 +200,9 @@ const bindEnvironmentFibers = (func, onException, _this) => {
   };
 };
 
+// This function has two reasons:
+// 1. Return the function to be executed on the MeteorJS context, having it assinged in the async localstorage.
+// 2. Better error handling, the error message will be more clear.
 const bindEnvironmentAsync = (func, onException, _this) => {
   var dynamics = Meteor._getValueFromAslStore("_meteor_dynamics");
   var boundValues = Array.isArray(dynamics) ? dynamics.slice() : [];