Update README.md

Author: nseidle

README.md

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 SparkFun RTK Firmware
 ===========================================================
 
-[![SparkFun RTK Surveyor](https://cdn.sparkfun.com/assets/parts/1/6/4/0/1/17369-GPS_RTK_Surveyor_-_Enclosed-01.jpg)](https://www.sparkfun.com/products/17369)
-
-[*SparkFun RTK Surveyor (SPX-17369)*](https://www.sparkfun.com/products/17369)
+<table class="table table-hover table-striped table-bordered">
+  <tr align="center">
+   <td><a href="https://www.sparkfun.com/products/17369"><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/15005"><img src="https://cdn.sparkfun.com//assets/parts/1/7/2/4/1/18019-SparkFun_RTK_Express-09.jpg"></a></td>
+  </tr>
+  <tr align="center">
+    <td><a href="https://www.sparkfun.com/products/17369">SparkFun RTK Surveyor (SPX-17369)</a></td>
+    <td><a href="https://www.sparkfun.com/products/18019">SparkFun RTK Express (SPX-18019)</a></td>
+  </tr>
+</table>
 
 The [SparkFun RTK Surveyor](https://www.sparkfun.com/products/17369) and [SparkFun RTK Express](https://www.sparkfun.com/products/18019) are centimeter-level GNSS receivers. With RTK enabled, these devices can output your location with 14mm horizontal and vertical *accuracy* at up to 20Hz!