an adaption of the Gatsby + Netlify CMS Starter

for investingating gatsby issues with forms:

• spences10/scottspence.me#596
• https://www.netlify.com/blog/2017/07/20/how-to-integrate-netlifys-form-handling-in-a-react-app/

the result is deployed here:

• https://netlify-swyx-test-gatsby-with-forms.netlify.com/contact/

with stateful components. you can also see the initial commit in this git history for an example with stateless components. they are tested to work as of Oct 2018.