fix #11

* create document

* CONTRIBUTING

* refine contributing docs

* patch for some propTypes definition missing

docs/development.md

@@ -0,0 +1,28 @@
+## Development Guide
+
+### Setup
+```bash
+$ git clone https://github.com/react-bootstrap-table/react-bootstrap-table2.git
+$ cd react-bootstrap-table
+$ npm install
+$ lerna bootstrap  # ./node_modules/.bin/lerna bootstrap
+```
+### Development
+```bash
+$ npm start
+```
+
+### Launch StoryBook
+We use [storybook](https://storybook.js.org/) to list our examples and it also have hot reload from source code. Sometime, it is also a good entry point to develop.
+
+```bash
+$ cd packages/react-bootstrap-table2-example
+$ npm run storybook
+```
+
+### Testing
+```bash
+$ npm test
+$ npm run test:watch  # for watch mode
+$ npm run test:coverage  # generate coverage report
+```