feat(Centralized Redis Governer):

This patch aims to replace the in-memory dictionary logic with a
centralised
Redis instance, that increments the counter for the Project-ID for every
request and throws a HardLimit Exception if the Client goes over the
stipulated limits.
fix(change casts) : cast to float before

cast count, last_time to float before their usage.
style() : whitespace and indentation
Merge pull request #27 from TheSriram/central_federated_governor

feat(Centralized Redis Governer):