Rewrite readme for official decomp repository

I guess this isn't just notes anymore.

readme.md

@@ -1,16 +1,27 @@
-# Jet Set Radio Future Decompilation Notes
-This is just a public holding space for anything I put together as a part of
-the JSRF decompilation effort.
+# Jet Set Radio Future NTSC-US Standalone Decompilation
+A matching decompilation of the Xbox game Jet Set Radio Future.
 
-## `delink/`
-`objects.csv` is a table of suspected object file boundaries for delinking.
-The addresses given in each section are runtime memory addresses (as one would
-see in e.g. Ghidra).
+## Progress
+- Delinking progress: 0.008% (205 out of 2574172 bytes in XBE address space)
+- Decompilation progress: 100% (6 out of the 6 symbols delinked so far)
 
-`delink.sh` is a script that produces delinked object files in `target/` from a
-Ghidra project.
+## Roadmap
+The approach of this decompilation is to:
+1. Delink the JSRF executable (`default.xbe`) into object files, each
+   representing a single C++ source file
+2. Decompile the object files into C++ code that produces matching object files
+3. Link the object files into a Windows executable (n.b. this would not be
+   runnable on Windows)
+4. Repackage the Windows executable into a working Xbox executable
 
-## `decompile/`
-The `src/` directory contains decompiled code and data.  Each symbol is
-annotated with its corresponding memory address in the original binary, and
-functions are marked as perfectly or imperfectly matching.
+We are currently engaging in the first two steps simultaneously, decompiling
+code as it's delinked.  Further details on these steps can be found in the
+[contribution guide](contributing.md).  Step 3 will use the linker from the
+same Visual C++ 7.0 already used to compile object files.  Step 4 is expected
+to use the `cxbe` tool found in e.g. [nxdk](https://github.com/XboxDev/nxdk).
+
+## Contributing
+Anybody interested in joining the effort is welcome to read the
+[contribution guide](contributing.md).  Those looking to get in contact with
+other contributors can post to the repository's issue tracker or join the
+[JSRF Reverse Engineering Discord](https://discord.gg/kYEm5jz).