Add database.yml to .gitignore
Add root route
Add railroady gem for class diagrams
Include docs in static assets to be served
Enable asset pipeline
Revert "Enable asset pipeline"

This reverts commit fa5bfa5f7a712cc8d62b98a252f4b2ac9eed5b64.
Revert "Include docs in static assets to be served"

This reverts commit 383c70d57cb2cd3a931d1208eb590148c1954066.