add readme for thunk-cli

Author: felixmaker

thunk-cli/README.md

@@ -0,0 +1,47 @@
+# Thunk-cli
+
+Thunk the Rust program to support old Windows platforms!
+
+## Preparation
+
+Download VC-LTL5 and YY-Thunks Binary, unzip them and add environment variable:
+
+| Binary | Environment Variable |
+| --- | ---|
+| VC-LTL-XXX-Binary.7z | VC_LTL |
+| YY-Thunks-XXX-Binary.zip | YY_THUNKS |
+
+Then add Thunk to run path. 
+
+
+## Install Thunk
+
+```
+cargo install thunk-cli
+```
+
+## Sample 1. Build for Windows XP
+
+```
+cargo new build_for_xp
+cd build_for_xp
+thunk --os xp --arch x86 -- --release
+```
+
+## Sample 2. Build a shared library for Windows XP
+
+```
+cargo new build_for_xp
+cd build_for_xp
+thunk --os xp --arch x86 --lib -- --release
+```
+
+## Show help
+
+Use the following command to show help:
+
+```
+thunk.exe --help
+```
+
+Note: In order to distinguish the program build by Thunk, Thunk builds the release in `./target/*_build`.