Update docs

Author: nseidle

docs/intro.md

@@ -6,16 +6,18 @@ The line of RTK products offered by SparkFun all run identical firmware. The [RT
 
 <table class="table table-hover table-striped table-bordered">
   <tr align="center">
-   <td><a href="https://www.sparkfun.com/products/18443"><img src="https://cdn.sparkfun.com//assets/parts/1/6/4/0/1/17369-SparkFun_RTK_Surveyor-14.jpg"></a></td>
-   <td><a href="https://www.sparkfun.com/products/18442"><img src="https://cdn.sparkfun.com//assets/parts/1/7/2/4/1/18019-SparkFun_RTK_Express-09.jpg"></a></td>
-   <td><a href="https://www.sparkfun.com/products/18590"><img src="https://cdn.sparkfun.com//assets/parts/1/8/0/7/5/18590-SparkFun_RTK_Express_Plus-04.jpg"></a></td>
+   <td><a href="https://www.sparkfun.com/products/20000"><img src="https://cdn.sparkfun.com//assets/parts/1/9/7/4/6/20000-SparkFun_RTK_Facet_L-Band-01.jpg"></a></td>
    <td><a href="https://www.sparkfun.com/products/19029"><img src="https://cdn.sparkfun.com//assets/parts/1/8/6/3/0/RTK_Facet_Photos-01.jpg"></a></td>
+   <td><a href="https://www.sparkfun.com/products/18590"><img src="https://cdn.sparkfun.com//assets/parts/1/8/0/7/5/18590-SparkFun_RTK_Express_Plus-04.jpg"></a></td>
+   <td><a href="https://www.sparkfun.com/products/18442"><img src="https://cdn.sparkfun.com//assets/parts/1/7/2/4/1/18019-SparkFun_RTK_Express-09.jpg"></a></td>
+   <td><a href="https://www.sparkfun.com/products/18443"><img src="https://cdn.sparkfun.com//assets/parts/1/6/4/0/1/17369-SparkFun_RTK_Surveyor-14.jpg"></a></td>
   </tr>
   <tr align="center">
-    <td><a href="https://www.sparkfun.com/products/18443">SparkFun RTK Surveyor (GPS-18443)</a></td>
-    <td><a href="https://www.sparkfun.com/products/18442">SparkFun RTK Express (GPS-18442)</a></td>
-    <td><a href="https://www.sparkfun.com/products/18590">SparkFun RTK Express Plus (GPS-18590)</a></td>
+    <td><a href="https://www.sparkfun.com/products/20000">SparkFun RTK Facet L-Band (GPS-20000)</a></td>
     <td><a href="https://www.sparkfun.com/products/19029">SparkFun RTK Facet (GPS-19029)</a></td>
+    <td><a href="https://www.sparkfun.com/products/18590">SparkFun RTK Express Plus (GPS-18590)</a></td>
+    <td><a href="https://www.sparkfun.com/products/18442">SparkFun RTK Express (GPS-18442)</a></td>
+    <td><a href="https://www.sparkfun.com/products/18443">SparkFun RTK Surveyor (GPS-18443)</a></td>
   </tr>
 </table>