Alvaro Yuste Torregrosa

At component `` with `chips` and `multiple` attributes activated. If the search-box is empty and the user presses backspace, the last chip added should be deleted. 

Units test per component must be placed at: `/src/components/[category]/[component]/[name].component.spec.ts` Any help writing unit tests for one or more component will be welcome.

Currently, the component docs are written in Spanish. They are located at: `/src/components/[category]/[component]/README.md` Any help translating one or more component's documentation will be welcome.