diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 0000000..4b481f0
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,31 @@
+CONTRIBUTING
+=======================
+
+
+## How to develope this extension
+
+We use yarn to manage dependencies. You can install yarn from [here](https://yarnpkg.com/en/docs/install).
+Then, please run `yarn` to install dependencies.
+
+### Some useful scripts
+
+- `yarn run compile`: compile typescript files
+- `yarn run watch`: watch and compile typescript files automatically
+- `yarn run package`: package extension 
+
+### How to submit to the marketplace
+
+Please see [here](https://code.visualstudio.com/docs/extensions/publish-extension).
+
+Make sure you have Node.js installed. Then run:
+```sh
+npm install -g @vscode/vsce
+```
+
+Remember to change the version number in `package.json` before publishing.
+Then you can publish the extension by running:
+```sh
+vsce package
+vsce publish
+```
+
diff --git a/package.json b/package.json
index 5b1042e..5d87706 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "vscode-llvm",
   "displayName": "VSCode LLVM Compiler Explorer",
   "description": "A tool for LLVM pass developer",
-  "version": "0.1.2",
+  "version": "0.2.0",
   "repository": {
     "type": "git",
     "url": "https://github.com/sunxfancy/vscode-llvm.git"