Allow recording position with users first page visit

addon/index.js

@@ -96,7 +96,6 @@ let RouterScrollMixin = Mixin.create({
 
     if (get(this, 'service.isFirstLoad')) {
       get(this, 'service').unsetFirstLoad();
-      return;
     }
 
     let scrollPosition;

tests/unit/services/router-scroll-test.js

@@ -32,7 +32,7 @@ module('service:router-scroll', function(hooks) {
   });
 
   test('updating will set `scrollMap` to the current scroll position', function(assert) {
-    const service = this.owner.factoryFor('service:router-scroll').create({ isFirstLoad: false });
+    const service = this.owner.factoryFor('service:router-scroll').create();
 
     const expected = { x: window.scrollX, y: window.scrollY };
     set(service, 'key', '123');
@@ -93,7 +93,7 @@ module('service:router-scroll', function(hooks) {
     otherElem.setAttribute('id', 'other-elem');
     const testing = document.querySelector('#ember-testing');
     testing.appendChild(otherElem);
-    const service = this.owner.factoryFor('service:router-scroll').create({ isFirstLoad: false, scrollElement: '#other-elem' });
+    const service = this.owner.factoryFor('service:router-scroll').create({ scrollElement: '#other-elem' });
     window.history.replaceState({ uuid: '123' }, null);
 
     let expected = { x: 0, y: 0 };
@@ -111,7 +111,7 @@ module('service:router-scroll', function(hooks) {
     otherElem.style.top = '100px';
     const testing = document.querySelector('#ember-testing');
     testing.appendChild(otherElem);
-    const service = this.owner.factoryFor('service:router-scroll').create({ isFirstLoad: false, targetElement: '#other-elem' });
+    const service = this.owner.factoryFor('service:router-scroll').create({ targetElement: '#other-elem' });
     window.history.replaceState({ uuid: '123' }, null);
 
     let expected = { x: 0, y: 0 };