gofmt++
Remove useless make()
Declare logging levels with iota
Idiomatic Go uses 'f' suffix for printf-like functions
Add basic expvar metrics and net/http/pprof
Log expvar metrics to graphite
gofmt: stdlib packages come first in import section
Merge pull request #1 from dgryski/style-and-expvar-fixes

Style and expvar fixes (dgryski)