chore(yarn): use yarn start to launch storybook

CONTRIBUTING.md

@@ -3,13 +3,13 @@
 ### Setting up the development environment
 
 ```
-yarn install
-yarn build
+yarn && yarn build
 ```
 
 ### Launching the dev gallery
+
 ```
-yarn storybook
+yarn start
 ```
 
 ### To build individual packages after modifications
@@ -39,23 +39,26 @@ yarn test
 If you want to keep the tests running in watch mode, you might need to install
 a Jest dependency watchman.
 
-- https://facebook.github.io/watchman/docs/install.html
+* https://facebook.github.io/watchman/docs/install.html
 
 And then:
+
 ```
 yarn test --watch
 ```
 
 #### Generate new snapshots and coverage reports
+
 To run the full test suite and generate a coverage report use:
 
 ```
 yarn test --coverage
 ```
 
-And open the html generated in ``coverage/lcov-report/index.html``
+And open the html generated in `coverage/lcov-report/index.html`
 
 To update the snapshots use
+
 ```
 yarn test -u
 ```
@@ -93,8 +96,8 @@ If you already have it installed, check the version with:
 pre-commit --version
 ```
 
-If you dont have it, please install 
-[pre-commit](http://pre-commit.com/) on your machine and then 
+If you dont have it, please install
+[pre-commit](http://pre-commit.com/) on your machine and then
 setup the git hooks by running:
 
 ```
@@ -104,10 +107,9 @@ pre-commit install
 #### Commit messages
 
 Farmblocks uses commitizen to help with the formatting of commit messages,
-so instead of doing a ``git commit``, we ask you to please use the ``commit`` 
+so instead of doing a `git commit`, we ask you to please use the `commit`
 npm script instead:
 
 ```
 yarn commit
 ```
-

package.json

@@ -7,6 +7,7 @@
   "main": "index.js",
   "private": true,
   "scripts": {
+    "start": "start-storybook -p 6006 -s .storybook/assets",
     "build": "lerna run build",
     "test": "jest",
     "snyk": "snyk test",