Added jsx-self babel transform plugin

packages/babel-plugin-transform-react-jsx-self/README.md

@@ -0,0 +1,49 @@
+# babel-plugin-transform-react-jsx-self
+
+Adds `__self` prop to JSX elements, which React will use to generate some runtime warnings.  All React users
+should enable this transform in dev mode.
+
+## Example
+
+###In
+
+```
+<sometag />
+```
+###Out
+
+```
+<sometag __self={this} />
+```
+
+## Installation
+
+```sh
+$ npm install babel-plugin-transform-react-jsx-self
+```
+
+## Usage
+
+### Via `.babelrc` (Recommended)
+
+**.babelrc**
+
+```json
+{
+  "plugins": ["transform-react-jsx-self"]
+}
+```
+
+### Via CLI
+
+```sh
+$ babel --plugins transform-react-jsx-self script.js
+```
+
+### Via Node API
+
+```javascript
+require("babel-core").transform("code", {
+  plugins: ["transform-react-jsx-self"]
+});
+```