Fix compilation on 32-bit machines

Signed-off-by: Andrea Law <alaw@pivotal.io>
Add go installation to vagrant box

Signed-off-by: Phan Le <ple@pivotal.io>
Switch swap to read values from /proc/meminfo rather than sysinfo

Signed-off-by: Phan Le <ple@pivotal.io>
Merge pull request #1 from cloudfoundry/master

Fix compilation on 32-bit machines