Add react-cosmos to Component Workbenches

content/community/tools-comp-workbenches.md

@@ -11,3 +11,4 @@ permalink: community/component-workbenches.html
 * **[patternplate](https://github.com/sinnerschrader/patternplate)**: A platform for pattern and component library development using React.
 * **[UiZoo.js](https://github.com/myheritage/UiZoo.js)**: Auto-generated component development environment by the JSDoc of React components.
 * **[Neutrino React components preset](https://github.com/eliperelman/neutrino-preset-react-components/)**: Create generic React components and previewing them without the need to embed in an application. Plays nicely with other Neutrino middleware, so you can build, test, preview, and publish multiple React components from a single repository.
+* **[React Cosmos](https://github.com/react-cosmos/react-cosmos)**: Dev tool for creating reusable React components. It scans your project for components and enables you to: render components in different states, mock dependencies (API, localStorage, etc.), see app state evolve in real time.