Updated README.md
Added a first time setup section
Also added a check to see if the wordpress environment is configured or not. Displays an error message if it's not
Removed CMH-specific Wordpress endpoints from config.json
Merge remote-tracking branch 'upstream/master'
Revert "Removed CMH-specific Wordpress endpoints from config.json"

This reverts commit af0de8ad092213c96d36baeb5b563d864bc3fa65.