Fix sending headers through with requests

• Update package info and docs 207cb73
• Version 3.2.2 5055a3b
• Merge remote-tracking branch 'origin/feature/custom-headers' 262332e
• Tidy up debug output c434c5c
• yarn add -D dedent 83041ab
• Add Readme on using custom headers 03bb3ae
• Fix sending headers through with requests 8257ec8
• gitignore build files 6ead2ae
• Add prettier config 2d91e66
• Add yarn start d8b557a
• Add yarn.lock d7304fa

v3.2.1...v3.2.3

Fix gatsby error `Unable to find plugin "@ptim/gatsby-source-wordpress". Perhaps you need to install its package?`

• Add index.js to allow gatsby to find the plugin 141b92e

v3.2.0...v3.2.1