Rewrite to Python

[bripkens]

This PR is changing everything about dock. The main idea is to use Python instead of bash as the language of choice. There are a few reasons for this language change. The most important one is that I am lacking bash skills and that I could do much more in Python.

TODOs:

• Rewrite library code to Python
• Rewrite all formulas to Python
  • Rewrite activemq formula
  • Rewrite apacheds formula
  • Rewrite artifactory formula
  • Rewrite cachet formula
  • Rewrite cassandra formula
  • Rewrite cassandra-cqlsh formula
  • Rewrite consul formula
  • Rewrite couchdb formula
  • Rewrite couchdb-ssl formula
  • Rewrite docker-gc formula
  • Rewrite elasticsearch formula
  • Rewrite jenkins formula
  • Rewrite kafka formula
  • Rewrite kafka-cli formula
  • Rewrite memcached formula
  • Rewrite mongodb formula
  • Rewrite mongo-express formula
  • Rewrite mysql formula
  • Rewrite mysql-cli formula
  • Rewrite neo4j formula
  • Rewrite nexus formula
  • Rewrite node formula
  • Rewrite orientdb formula
  • Rewrite php5-apache formula
  • Rewrite php5-fpm formula
  • Rewrite php7-apache formula
  • Rewrite php7-fpm formula
  • Rewrite postgres formula
  • Rewrite postgres-cli formula
  • Rewrite rabbitmq formula
  • Rewrite redis formula
  • Rewrite redis-cli formula
  • Rewrite rethinkdb formula
  • Rewrite sonar formula
  • Rewrite ubuntu formula
  • Rewrite wordpress formula
  • Rewrite zookeeper formula
• Change the CLI to only allow a single formula to be started. Forward the remaining arguments as run arguments to the formula files.
• Add tests for CLI
• Add tests for Docker abstraction
• Enable Travis
• Release to PyPi
• Document the release process
• Let early adopters and friends test the new version
• Set the develop branch as the main branch
• Deprecate brew based install and provide an upgrade guide
  • Include upgrade hints in all formulas and release them
  • Include upgrade hints in the main bash script and release it
• Once develop has been the master branch for two months and migration guide is available to brew users: Merge this PR and set the master branch as the default branch.