Added Gregg + Adam & Mixins free lesson link (#1981)

Author: Gregg

src/v2/guide/mixins.md

@@ -8,6 +8,8 @@ order: 301
 
 Mixins are a flexible way to distribute reusable functionalities for Vue components. A mixin object can contain any component options. When a component uses a mixin, all options in the mixin will be "mixed" into the component's own options.
 
+<div class="vue-mastery"><a href="https://www.vuemastery.com/courses/next-level-vue/mixins" target="_blank" rel="noopener" title="Mixins Tutorial">Watch a video explanation on Vue Mastery</a></div>
+
 Example:
 
 ``` js

src/v2/guide/team.md

@@ -1159,6 +1159,40 @@ order: 803
         'https://vuestorefront.io'
       ]
     },
+    {
+      name: 'Gregg Pollack',
+      title: '',
+      city: 'Orlando, FL',
+      languages: ['en'],
+      github: 'gregg',
+      twitter: 'greggpollack',
+      work: {
+        role: 'Vue Instructor',
+        org: 'Vue Mastery',
+        orgUrl: 'https://www.vuemastery.com/'
+      },
+      links: [
+        'https://www.vuemastery.com',
+        'https://news.vuejs.org/'
+      ]
+    },
+    {
+      name: 'Adam Jahr',
+      title: '',
+      city: 'Orlando, FL',
+      languages: ['en'],
+      github: 'atomjar',
+      twitter: 'adamjahr',
+      work: {
+        role: 'Vue Instructor',
+        org: 'Vue Mastery',
+        orgUrl: 'https://www.vuemastery.com/'
+      },
+      links: [
+        'https://www.vuemastery.com',
+        'https://news.vuejs.org/'
+      ]
+    }
   ]
 
   Vue.component('vuer-profile', {