Load /etc/nginx/default before testing $DAEMON

If $DAEMON is tested before /etc/nginx/default is loaded then it effectively can't be overwritten.
Correct location of default folder in docs
Merge pull request #12 from sturgill/master

Doc and script changes
- Modify to load `/etc/nginx/default` prior to testing `$DAEMON` @sturgill
- Update default location in docs @sturgill