Add memory.swapUsedPercentage metric
Merge pull request #780 from cluePrints/memory-swap-used-percentage

Add memory.swapUsedPercentage metric
ohai_time is an attribute, not a method

ohai_time is an undefined method in later versions of the chef gem
Merge pull request #791 from srodrig0209/patch-5

ohai_time is an attribute, not a method