Remove two unnecessary rules

Requests that matched these signatures would have resulted in a 400
from Nginx before the access phase was hit.
Implement rudimentary scoring system

Adds a SCORE rule action that increments a per-transaction counter.
Rules with SCORE actions must have a corresponding score key in
their opts table.

Rewrites included rules to use scores that mimic that behavior
used in the ModSecurity base CRS.
Replace DEBUG mode with SIMULATE

This tries to avoid confusion, since we have a 'debug' module
option.
README update
Bump for version tagging