update README

Author: DanielZlotin

README.md

@@ -23,9 +23,11 @@ This project is based on [facebook/android-jsc](https://github.com/facebook/andr
 ## Build instructions
 
 1. Clone this repo
-1. Update the config section under `package.json` to the desired build configuration
-1. `npm run download`: downloads all needed sources
-1. `npm run start`: builds jsc (this might take some time...)
+2. `npm run clean` will clean everything (artifacts, downloaded sources)
+3. Update the config section under `package.json` to the desired build configuration
+4. Update patches if needed (don't forget to update the `printVersion` patch in jsc.patch)
+5. `npm run download`: downloads all needed sources
+6. `npm run start`: builds jsc (this might take some time...)
 
 The zipfile containing the android-jsc AAR will be available at `/dist`.
 The library is packaged as a local Maven repository containing AAR files that include the binaries.
@@ -36,6 +38,8 @@ JSC library built using this project is distributed over npm: [npm/jsc-android](
 The library is packaged as a local Maven repository containing AAR files that include the binaries.
 Please refer to the section below in order to learn how your app can consume this format.
 
+On load, JSC prints the version out to logcat, under "JavaScriptCore.Version" tag.
+
 ## How to use it with my React Native app
 
 Follow steps below in order for your React Native app to use new version of JSC VM on android:

patches/jsc.patch

@@ -258,7 +258,7 @@ diff -aur target-org/webkit/Source/JavaScriptCore/API/JSBase.cpp target/webkit/S
 +extern "C" int __android_log_print(int prio, const char *tag, const char *fmt, ...);
 +__attribute__((constructor))
 +void printVersion() {
-+    __android_log_print(3, "JavaScriptCore-Version", "%s", "224109.1.0");
++    __android_log_print(3, "JavaScriptCore.Version", "%s", "224109.1.0");
 +}
 diff -aur target-org/webkit/Source/JavaScriptCore/CMakeLists.txt target/webkit/Source/JavaScriptCore/CMakeLists.txt
 --- target-org/webkit/Source/JavaScriptCore/CMakeLists.txt	2017-10-16 15:19:26.000000000 +0300