examples/guestbook-go: build from source and remove bin/docker dep
Update README.md

GoogleCloudPlatform/kubernetes#1454
Use builder instead of build
Use builder instead of build
One last time.
Merge pull request #1 from Gurpartap/patch-1

Remove DOCKER_BIN and boot2docker instructions from README.md
Merge pull request #1454 from proppy/guestbook-go

examples/guestbook-go: build from source and remove bin/docker dep