Update README.md

Author: tonyfreeman

README.md

@@ -1,17 +1,9 @@
 # JavaScript
 
-This package provides JavaScript APIs for several engines.
-
-## Package Targets
-* JavaScipt - common protocols
-* V8 - google's v8 engine wrapper
-* JavaScriptCoreSwift - linux version of apple's JavaScriptCore
-* СhakraCore - microsoft's chakracore engine wrapper (WIP)
-
 ## Package.swift
 
 ```swift
-.package(url: "https://github.com/tris-foundation/javascript.git", .branch("master"))
+.package(url: "https://github.com/tris-foundation/javascript.git", .branch("jsc"))
 ```
 
 ## Usage
@@ -33,61 +25,10 @@ assertEqual("\(result)", "result string")
 
 ### macOS
 
-#### V8
-
-```bash
-brew install v8
-```
-
-#### JavaScriptCore
-
-Works OOB
-
-#### SwiftPM arguments
-
-```bash
-swift package \
- -Xcc -I/usr/local/include \
- -Xlinker -L/usr/local/lib \
- -Xlinker /usr/local/lib/libv8.dylib \
- -Xlinker /usr/local/lib/libv8_libbase.dylib \
- -Xlinker /usr/local/lib/libv8_libplatform.dylib \
- generate-xcodeproj
-
-swift test \
- -Xlinker /System/Library/Frameworks/JavaScriptCore.framework/Versions/Current/JavaScriptCore \
- -Xcc -I/usr/local/include \
- -Xlinker /usr/local/lib/libv8.dylib \
- -Xlinker /usr/local/lib/libv8_libbase.dylib \
- -Xlinker /usr/local/lib/libv8_libplatform.dylib \
- --generate-linuxmain
-```
+Just works
 
 ### Linux
 
-#### V8
-
-For full instructions follow https://v8.dev/docs/build
-```bash
-git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
-export PATH=$PATH:$(pwd)/depot_tools
-fetch v8
-cd v8
-gclient sync -r 7.0.276.28
-./build/install-build-deps.sh #OMG
-gn gen --args="is_debug=false is_component_build=true v8_use_external_startup_data=false v8_enable_i18n_support=false" out.gn/x64.release
-ninja -j8 -C out.gn/x64.release -v d8
-```
-
-#### JavaScriptCore
 ```bash
 apt install -y libjavascriptcoregtk-4.0-dev
 ```
-
-#### SwiftPM arguments
-
-```bash
-export LD_LIBRARY_PATH=/opt/libv8-6.6/lib
-swift build -Xcc -I/opt/libv8-6.6/include -Xlinker -L/opt/libv8-6.6/lib -Xlinker -lv8_libbase -Xlinker -lv8_libplatform
-swift test -Xcc -I/opt/libv8-6.6/include -Xlinker -L/opt/libv8-6.6/lib -Xlinker -lv8_libbase -Xlinker -lv8_libplatform
-```