First write-up of instructions

Wifi_DevBoard/FZ_Marauder_Flasher/ReadMe.md

@@ -1,3 +1,21 @@
-Quick and easy flasher (and updater) for Marauder.
+# Quick and easy flasher/updater for Marauder on the Wifi Devboard!
 
-Coming soon: Black Magic (original debug firmware) flashing.
+## Now it's as easy as 1, 2, 3 to install or update Marauder on Windows.
+
+1. Download and extract [the ZIP file](https://github.com/UberGuidoZ/Flipper/raw/main/Wifi_DevBoard/FZ_Marauder_Flasher/FZ_Marauder_v1.0.zip) above to the same directory.<br>
+2. Hold `BOOT` on the devboard and plug it into your PC via USB directly.<br>
+3. Double-click `flash.bat` from the extracted files and choose `Install` or `Update`.
+
+If you choose `Install` the script will locate your board and flash Marauder automatically!<br>
+If you choose `Update` you'll be taken to the Marauder download location to grab a new version.<br>
+(Simply download the BIN file as stated and stick it in the Marauder subfolder of the batch file.)
+
+**Current Marauder version included in the ZIP: v0.9.13.20220806 (current at release Aug 14, 2022)**
+
+The batch file is also included above individually for review and to track coming changes.<br>
+*Coming soon: Black Magic (original debug firmware) flashing.*
+
+Acknowledgements:<br>
+* [Frog](https://github.com/FroggMaster) (scripting and inspiring the idea)<br>
+* [ImprovingRigmarole](https://github.com/Improving-Rigmarole) (Initial scripting and testing)<br>
+* [UberGuidoZ](https://github.com/UberGuidoZ) (continued scripting, development, and testing)