Sort Plugin Time To Run Descending
Performance Improvements

Used the -IntervalMins parameter rather than the -Start and -Finish
parameters, this reduces the runtime by approx 60%. Testing showed each
Get-Stat call reduced from 5 seconds to 2 seconds, overall runtime for
48 VMs was reduced from an average of 333 seconds to 134 seconds.
Merge pull request #51 from sammcgeown/master

33 - CPU Usage plugin performance improvements