Added a new input parameter, peak-req-ratio (-k), that determines the multiplicative factor used to estimate the peak number of requests from the average number of requests per hour.
Added a new input parameter, peak-req-ratio (-k), that determines the multiplicative factor used to estimate the peak number of requests from the average number of requests per hour.

Fixed a memory leak in optimizeCaching() due to the CPLEX environment not being closed under certain circumstances.