Update README.md

Author: ashquarky

README.md

@@ -1,12 +1,14 @@
-# wiiurpxtool
-Compress or decompress RPL/RPX files for Wii U.
+# wiiurpxlib
+Rewrite of [wiiurpxtool](https://github.com/0CBH0/wiiurpxtool) that works as a
+library, using modern C++. Also allows library users to access the in-memory
+representation of the RPX file, allowing it to be read and modified without
+writing a decompressed file back to disk first.
 
 # Dependencies
-LLVM
-
-zlib
+- zlib
+- A C++20 capable compiler
+- Applications using the library need to be built with C++17 or newer
 
 # Credits
-Hykem (documentation and research of the RPL/RPX format)
-
-Mark Adler (zlib header files)
+- Hykem (documentation and research of the RPL/RPX format)
+- 0CBH0 (original wiiurpxtool)