README: add credits and basic instructions about IS-NITRO usage

README.md

@@ -8,7 +8,16 @@ This homebrew can dump the Nintendo DS BIOS and firmware from a Nintendo DS, DSi
 1. Run the app, and it should place your BIOS and firmware in a `FW############` folder on your SD card.
     - Replace `############` with the MAC address of the device
 
+### Usage (IS-NITRO)
+1. Download `dsbf_dump.nds` and rename the file extension to `.srl`
+1. Load the app into IS-NITRO-DEBUGGER
+1. For each section that is dumped:
+    - Use the debugger to dump the memory contents
+    - Find the area with `0xDE`s, this is where the dump presides. Cut off all the parts before and including the `0xDE`s
+    - Find the area of `0xAD`s, this is the end of the dump. Cut off all the parts including and after the `0xAD`s
+
 ### Credits
 - [cory1492](https://web.archive.org/web/20071027043203/http://nds.cmamod.com:80/2007/01/24/dsbf_dump-79-bios-firmware-dumper/), of which this program is a spiritual successor to. 
     - The original source was uploaded by cory1492 [here](https://kippykip.com/index.php?threads/483/), and has since been completely rewritten
 - [SombrAbsol](https://github.com/SombrAbsol), who designed the new icon
+- [Mythra](https://github.com/Mythra), who added needed workarounds to dump IS-NITRO firmwares