README.md in format_parser-2.2.1 vs README.md in format_parser-2.3.0

@@ -36,10 +36,11 @@
 * OGG
 * PDF
 * PNG
 * PPTX
 * PSD
+* RW2
 * TIFF
 * WAV
 * WEBP
 * XLSX
 * ZIP
@@ -214,9 +215,12 @@
 ### OGG
 - `hi.ogg`,  `vorbis.ogg`, `with_confusing_magic_string.ogg`, `with_garbage_at_the_end.ogg` have been generated by the project contributors
 
 ### PNG
 - `simulator_screenie.png` provided by [Rens Verhoeven](https://github.com/renssies)
+
+### RW2
+- RW2 examples are downloaded from https://raw.pixls.us/ and are in the public domain (CC0).
 
 ### TIFF
 - `Shinbutsureijoushuincho.tiff` is obtained from Wikimedia Commons and is Creative Commons licensed
 - `IMG_9266_*.tif` and all it's variations were created by the project maintainers