brew install go --cross-compile-common
export GOROOT=/usr/local/opt/go/libexec
export GOPATH=$HOME/go
export GOBIN=$HOME/go/bin
export PATH=$PATH:$GOROOT/bin:$GOPATH/bin
export PATH=$PATH:/usr/local/opt/go/libexec/bin
brew install hg bzr
go get github.com/golang/lint/golint
go get golang.org/x/tools/cmd/godoc
godoc -http=:6060 &
open http://localhost:6060