Update readme. Add UPrecise software.

Author: nseidle

README.md

@@ -5,6 +5,8 @@ SparkFun RTK Torch
 
 [*SparkFun RTK Torch in action (GPS-25662)*](https://www.sparkfun.com/products/25662)
 
+This repo primarily houses the RTK [hookup guide](https://docs.sparkfun.com/SparkFun_RTK_Torch/), datasheets, and firmware for the UM980. For the product manual for the RTK Torch, please see the [RTK Everywhere Product Manual](https://docs.sparkfun.com/SparkFun_RTK_Everywhere_Firmware/).
+
 The RTK Torch is the latest and greatest generation RTK product from SparkFun Electronics and is your one-stop shop for high-precision geolocation and GIS needs. We compiled our wish list and got it all: tri-band reception, tilt compensation, and a built-in LoRa radio, all protected inside a waterproof housing.
 
 This repo houses the datasheets and technical information for the specific hardware devices inside RTK Torch. For the firmware, see [RTK Everywhere Firmware](https://github.com/sparkfun/SparkFun_RTK_Everywhere_Firmware). This repo also houses the Hookup Guide material.
@@ -18,6 +20,7 @@ Repository Contents
 
 * **[/docs](/docs/)** - Markdown files used in the [hookup guide](https://docs.sparkfun.com/SparkFun_RTK_Torch/)
 * **[Datasheets](/Datasheets)** - Datasheets for the various bits of hardware in the RTK Torch
+* **[Firmware](/UM980_Firmware/)** - Contains various firmwares for the UM980 and UPrecise, the windows software to bootload new firmware.
 
 Product Variants
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