Revert "removed dependencies already taken care of by k8s"

This reverts commit f083e356821b902fef61d88384f1d814ba72ea1f.
use "godep restore" to pull down all dependencies for build and do not use third_party/
implemented PR#27
removed FRAMEWORK_SRC, formatting, added TODO
cleaned up build instructions to leverage godep
additional cleanup for build steps
removed unreferenced require-k8s target from PHONY
Merge pull request #33 from mesosphere/better_makefile

Cleaned up makefile to better leverage godep, updated README with simplified build steps.