Update README

README.md

@@ -1,10 +1,19 @@
 # Forgelin
-Fork of [Emberwalker's Forgelin](https://github.com/Emberwalker/Forgelin).
+Fork of [Shadowfact's Forgelin](https://github.com/shadowfacts/Forgelin).
 
 ## Additions
 - Shades the Kotlin standard library, runtime, coroutines-core, and reflect libraries so you don't have to.
+- Shades kotlin compiler and includes a jsr-223 script engine so you can write CNPC scripts with kotlin.
 - Provides a Forge `ILanguageAdapter` for using Kotlin `object` classes as your main mod class.
 
+## Build
+After build, open the jar with WinRAR/7Zip and delete `META-INF/versions` folder,
+or your artifact will not be loaded by FML.
+
+**Why:** Those folder contains class files that is valid only after Java9+. and when FML passes these classes to coremods,
+ the `ClassReader`s inside those coremods will throw exceptions, causing the jar to be thought corrupted.
+
+
 ## Usage
 ```groovy
 repositories {
@@ -21,4 +30,4 @@ dependencies {
 
 All versions can be seen [here](http://maven.shadowfacts.net/net/shadowfacts/Forgelin/).
 
-**Note:** You must have the `jcenter()` call in your `repositories` block. JCenter is used to host the Kotlin coroutines libraries.
+**Note:** You must have the `jcenter()` call in your `repositories` block. JCenter is used to host the Kotlin coroutines libraries.