Update README.md

Author: Kyle-Ye

README.md

@@ -1,17 +1,33 @@
 # swift-pd-guess
 
-Try to guess the file name from a private discriminator of a private Swift symbol.
+Try to guess the file name from private discriminator of a Swift symbol.
+
+## Usgae
+
+```shell
+swift-pd-guess <hash> <words> --prefix <prefix> [--suffix <suffix>] [--max-count <max-count>]
+```
 
 ## Example
 
-See Example/README.md for detail.
+For DemoKit binary, we can see some private symbol have "_00D91DAB7748ABA327DC94E69D678CAF" in their demangled name.
 
-## Usgae
+Eg. _$s7DemoKit3FooV7Private33_00D91DAB7748ABA327DC94E69D678CAFLLVMn --demangle--> nominal type descriptor for DemoKit.Foo.(Private in _00D91DAB7748ABA327DC94E69D678CAF)
+
+We can then use `swift-pd-guess` to guess the file name using a given words array.
 
 ```shell
-swift-pd-guess <hash> <words> --prefix <prefix> [--suffix <suffix>] [--max-count <max-count>]
+swift-pd-guess 00D91DAB7748ABA327DC94E69D678CAF Foo,Private,API,_,+, --prefix DemoKit
+# Try brute force hash: 00D91DAB7748ABA327DC94E69D678CAF with dictionary ["Foo", "Private", "API", "_", "+"] max-4
+# Found match: DemoKitFoo+Private.swift
 ```
 
+The result is `DemoKit/Foo+Private.swift` since we are lucky to find a good words array.
+
+## Related Projects
+
+https://github.com/OpenSwiftUIProject/SwiftPrivateImportExample
+
 ## License
 
 MIT. See LICENSE for detail.