further update README

ReadMe.md

@@ -1,3 +1,9 @@
+# mBlock
+
+The mBlock is a branch of on the [Scratch 2.0 offline version](https://github.com/LLK/scratch-flash). It adds support of Makeblock products and other Arduino-based boards.
+
+You can get more information or [download a release build at the mBlock website](http://www.mblock.cc)
+
 # 4.0
 
 This is a future version of mBlock. Based on Electron.
@@ -14,6 +20,17 @@ Just standard npm stuff. You know that.
 > npm run rebuild-bluetooth
 > npm start
 
+
+# Repo Status
+
+version 3.4.5(in branch 3.4.5) is the currently released version, is considered a "stable" version and will not be actively updated. However, if you find any bugs, welcome to fire a pull request.
+
+If you want to work with translation, or find errors in the translations, [please read this document on how to translate mBlock](http://www.mblock.cc/posts/note-for-translators). This Git repo does not accept pull requests on translating the texts.
+
+# Installer
+
+[Download for windows/mac at the mBlock website](http://www.mblock.cc)
+
 # Translations
 
 If you want to work with translation, or find errors in the translations, [please read this document on how to translate mBlock](http://www.mblock.cc/posts/note-for-translators). This Git repo does not accept pull requests on translating the texts.