Consistently use headings in README
Consistently use headings in README

Rather than a mix of headings and bold text

stwalsh/smart-answers,alphagov/smart-answers,stwalsh/smart-answers,tadast/smart-answers,alphagov/smart-answers,aledelcueto/smart-answers,stwalsh/smart-answers,askl56/smart-answers,aledelcueto/smart-answers,askl56/smart-answers,aledelcueto/smart-answers,alphagov/smart-answers,askl56/smart-answers,aledelcueto/smart-answers,tadast/smart-answers,stwalsh/smart-answers,tadast/smart-answers,tadast/smart-answers,alphagov/smart-answers,askl56/smart-answers