Apply template string

packages/accounts-password/email_templates.js

@@ -7,14 +7,14 @@ function greet(welcomeMsg) {
   return function(user, url) {
       var greeting = (user.profile && user.profile.name) ?
             ("Hello " + user.profile.name + ",") : "Hello,";
-      return greeting + "\n"
-        + "\n"
-        + welcomeMsg
-        + ", simply click the link below.\n"
-        + "\n"
-        + url + "\n"
-        + "\n"
-        + "Thanks.\n";
+      return `${greeting}
+
+${welcomeMsg}, simply click the link below.
+
+url
+
+Thanks.
+`;
     }
   };
 }

packages/accounts-password/package.js

@@ -21,6 +21,7 @@ Package.onUse(function(api) {
   api.use('random', ['server']);
   api.use('check');
   api.use('underscore');
+  api.use('ecmascript');
 
   api.addFiles('email_templates.js', 'server');
   api.addFiles('password_server.js', 'server');