Typesafe-conductr-cli

Features are now downloaded as bundles for ConductR 2 onward.

- Implement support for Basic Auth.
- Remove `sandbox debug`.
- Disallow combination of `--no-wait` and feature flags in `sandbox run` command.
- Output `docker stats` command as part of `sandbox run`

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**Note on support for basic auth**
- CLI will fail with an error message if Basic Auth is used over HTTP.
- Provide mechanism to supply a file which can be used to validate server SSL cert.

The use case for this is to secure Control Protocol behind an HTTPS proxy with basic auth enabled.

The SSL cert validation defers to the validation provided by Python's `requests` library.

http://docs.python-requests.org/en/master/user/advanced/ssl-cert-verification

During CI build, checking now if the `README.rst` has the correct format to ensure that the README is correctly rendered on Github and PyPi.

Fix RST format issue in Readme in order to format the https://pypi.python.org/pypi/conductr-cli documentation page correctly.

- Sandbox command now uses Python's logging instead of print
- Perform check at the correct interval when waiting for bundle install
- Prevent duplicate display of progress bar
- Update company name to Lightbend
- Perform VM checks for each sandbox command
- Display ansi colors on Windows correctly
- Increase sandbox run timeout to 60 seconds
- Fixed issue that the bundle was resolved from bintray, even when it exists locally

This release unravels the requests/urllib3/request-toolbox workaround given that a 2.12.1 release of requests is now available.