Update how to use and support matrix

Author: exoego

README.md

@@ -1,16 +1,31 @@
 This is a complete Scala.js facade for Node.js for Scala 2.12 and 2.13.
-A fork of https://github.com/scalajs-io/nodejs to sustain the project.
-
-## Build Requirements
-
-* [SBT 1.3.x] (http://www.scala-sbt.org/download.html)
-* JDK 8 or JDK 11
 
 ## Features
 
 The Node.js integration is nearly complete (feature for feature), and should be more than sufficient for most web-based 
 and CLI applications.
 
+## How to use
+
+Add below line to your SBT project.
+
+```sbt
+libraryDependencies += "net.exoego" %%% "scala-js-nodejs-v8" % "0.8.0"
+```
+
+## Support matrix
+
+|  | ScalaJS 0.6.28+ | ScalaJS 1.x |
+|---|:---:|:---:|
+| Scala 2.13 | :heavy_check_mark: | :construction: | 
+| Scala 2.12 | :heavy_check_mark: | :construction: |
+| Scala 2.11 | - | - |
+| Scala 2.10 | - | - |
+ 
+* :heavy_check_mark:: Supported
+* :construction:: Not supported but planned
+
+
 ### Supported Modules
 
 The following core Node.js modules (v8.7.0) have been implemented:
@@ -42,11 +57,6 @@ The following core Node.js modules (v8.7.0) have been implemented:
 | vm                    | The vm module provides APIs for compiling and running code within V8 Virtual Machine contexts.|
 | zlib                  | This provides bindings to Gzip/Gunzip, Deflate/Inflate, and DeflateRaw/InflateRaw classes. |
 
-## How to use
-
-**TBD**: Not published yet.
-
-See https://github.com/exoego/scala-js-nodejs/issues/3
 
 
 ## Example of code