[chore] added documentation for development.

docs/SUMMARY.md

@@ -1,6 +1,9 @@
 # Summary
 
 * [Read Me](/README.md)
+
+* [Development](dev/README.md)
+
 * [Styles](styles/README.md)
   * [Using CSS Classes](styles/classes.md)
   * [Overriding Defaults](styles/defaults.md)

docs/dev/README.md

@@ -0,0 +1,33 @@
+# Development
+
+`react-modal` uses `make` to build and publish new versions and documentation.
+
+It works as a checklist for the future releases to keep everything updated such as
+`CHANGELOG.md`, `package.json` and `bower.json` and so on.
+
+The minimun works as a normal `npm script`.
+
+## Usage
+
+Once you clone `react-modal`, you can run `sh bootstrap.sh` to check
+and download dependencies not managed by `react-modal` such as `gitbook-cli`.
+
+It will also show information about the current versions of `node`, `npm`,
+`yarn` and `jq` available.
+
+## List of `npm` commands:
+
+    $ npm start -s or yarn start  # to run examples
+    $ npm run tests
+    $ npm run lint
+
+## List of `make` commands:
+
+    $ make help           # show all make commands available
+    $ make deps           # npm install, gitbook plugins...
+    $ make serve          # to run examples
+    $ make tests          # use when developing
+    $ make tests-ci       # single run
+    $ make lint           # pass lint
+    $ make publish        # execute the entire pipeline to publish
+    $ make publish-docs   # execute the pipeline for docs