Point users to the latest release in README.md

doc(CONTRIBUTING): modify the procedural aspects

ref(client): rename pkg/dm to pkg/client

feat(testcov): add a test coverage helper script

fix(rootfs): check $DOCKER_PROJECT if registry is gcr.io

fixing shell variable references

fix(gitignore): ignore nohup.out

This removes some unnecessary process details, removes some of the more
hierarchical/authoritarian elements, and adjust the language to reflect
a more open process.

Proposed: Add Vagrantfile for build

chore(*): update img versions for `helm dm install`

Updated project governance

Fix build on GNU make

fix(*): allow local docker registry

fix(README.md): use CircleCI badge instead of TravisCI badge

This fix supersedes #323. It applies basically the same fixes:

- local docker registries are now supported
- kubectl is not downloaded on every build

Also, added a fix for the case where `docker version` failed because the
Docker daemon crashed, and consequently spuriously propmted the user to
re-install docker.

I added support for $DOCKER_PROJECT instead of just $PROJECT because the
later is a little too generic for a shell env var. We can deprecate
$PROJECT later.

I did not add back in the better tool checks in bootstrap because
CircleCI doesn't have the `command` command.

fix(*): remove old version of install.yaml

chore(*): remove travis ;)

Make fixes

This resolves issue #334.

chore(*): set up circleci

Followup to #318

feat(dm install): use template to generate manifest