Ignore vagrant folder

Signed-off-by: Phan Le <ple@pivotallabs.com>
Add CollectCpuStats to collect CPU stats over time

Signed-off-by: Phan Le <ple@pivotallabs.com>
Add vagrant file to run test in linux

Signed-off-by: Phan Le <ple@pivotallabs.com>
Add .travis file

Signed-off-by: Phan Le <ple@pivotallabs.com>