RE: #105

* Refresh README
- Remove links out to Tweets / earlier development
- Feature CLI usage on front page

- Watchdog - allow new methods with and without body.
- Enforce hard-timeout via exec_timeout variable.
- Correct bug in timeouts for read/write of HTTP.
- Documentation for new verbs and hard timeout.

Signed-off-by: Alex Ellis <alexellis2@gmail.com>

Signed-off-by: Alex Ellis <alexellis2@gmail.com>

Is not working as expected - does not add config files into alertmanager/prometheus.

This modifies Dockerfile.build.* to run unit tests before build.

This adds support for private docker registries, by adding
an optional `registryAuth` field in the CreateFunctionRequest.
Auth must be passed as base64-encoded basic auth, similar to
how done in Docker file store credentials (~/.docker/config.json).
Credentials are then passed to swarm at service creation.