Imports of example command

PathSynopsis
errorsPackage errors implements functions to manipulate errors.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
github.com/getsentry/raven-goPackage raven implements a client for the Sentry error logging service.
logPackage log implements a simple logging package.
net/httpPackage http provides HTTP client and server implementations.
osPackage os provides a platform-independent interface to operating system functionality.