Added Default Cache Time
Added Default Cache Time

Caching was being done but by default there is no config option for ttl causing it to expire instantly. This is just a default value that can be overwritten with a `cache.ttl` option.
Zizaco/entrust,leon19910505/entrusts,leon19910505/entrusts,proshore/entrust-lumen,proshore/entrust-lumen,Zizaco/entrust