LOW HANGING FRUIT: make goreportcard happy

[AkihiroSuda]

goreportcard says A+ for Namazu v0.2.0, but there are still things we should do:

Component	Score
go_vet	100%
gocyclo	98%
gofmt	98%
golint	41%
ineffassign	98%
license	100%
misspell	98%

gocyclo: 98%

namazu/nmz/cli/init.go
  Line 108: warning: cyclomatic complexity 22 of function _init() is high (> 15) (gocyclo)
namazu/nmz/explorepolicy/random/randompolicy.go
  Line 156: warning: cyclomatic complexity 17 of function (*Random).LoadConfig() is high (> 15) (gocyclo)

gofmt 98%

namazu/nmz/cli/tools/visualize.go
  Line 1: warning: file is not gofmted (gofmt)
namazu/nmz/signal/action_sched_procset_test.go
  Line 1: warning: file is not gofmted (gofmt)

golint 41%

...

ineffassign 98%

namazu/nmz/inspector/transceiver/resttransceiver.go
  Line 92: warning: err assigned and not used (ineffassign)
  Line 69: warning: err assigned and not used (ineffassign)
  Line 47: warning: err assigned and not used (ineffassign)
namazu/nmz/container/ns/boot.go
  Line 42: warning: err assigned and not used (ineffassign)

misspell 98%

namazu/nmz/endpoint/pb/pbendpoint.go
  Line 30: warning: 53:found "diferrent" a misspelling of "different" (misspell)
namazu/nmz/endpoint/pb/pbendpoint_test.go
  Line 107: warning: 55:found "diferrent" a misspelling of "different" (misspell)