Pre-launch fixes

[daviddarnes]

• Add lock file to ensure installation
• Add example env file, daviddarnes/functions.netlify.com#12
• Add serverless workshop link, fixes daviddarnes/functions.netlify.com#4
• Sort tutorials by date, fixes daviddarnes/functions.netlify.com#5
• Clear up repo references, redirect repo links, fixes daviddarnes/functions.netlify.com#6
• Fix display and spacing on Netlify Deploy buttons, fixes daviddarnes/functions.netlify.com#9
• Create netlify.toml, clean out other files in turn, fixes daviddarnes/functions.netlify.com#12
• Add issue templates, fixes daviddarnes/functions.netlify.com#7

[netlify]

Deploy request for functions accepted.

Accepted with commit ca9218d

https://app.netlify.com/sites/functions/deploys/602d38ba2fd91e0007a6140b