set up config to work for local and WSGI; moved plot.ly auth to index page making
Added Dockerfile & webserver configs for CentOS/Apache/WSGI
works ; cleaned up comments; set x-range using BIRTH_YEAR config var

This commit works as both a local Flask/Python app and can build a
CentOS image running an Apache web server that serves the WSGI file to
run this.
Initial commit: README.md to tell all about this