0.6.0

This is a backwards-INCOMPATIBLE release

API, cookbook changes:

• Refactored attributes to be cleaner and more readable
• The user and group are now created if they don't exist, and by default are
  installed under anaconda/anaconda
• New attributes for configuring notebook server
• The OS architecture (x86 versus x86_64) is now autodetected by default

Platform, support changes:

• Added support for Anaconda 2.3 (all pythons and all architectures)
• Removed support for all Anacondas < 2.2.0
• updated metadata.rb 'supports' tags (hopefully this doesn't break anything)

Tools changes:

• Migrated to chefdk 0.8.1
  • upgraded gems
  • updated chefspec
  • updated documentation
  • removed rbenv/rvm files

Testing changes:

• Moved to kitchen-docker for Docker-based testing, which is much much much
  faster
• Updated supported (tested) platforms:
  • ubuntu:
    • removed: 12.10, 13.04, 13.10
    • added: 15.04
  • debian:
    • removed: 6.0.5
    • added: 7.8, 8.1 (7.9 and 8.2 not in fauxhai yet)
  • centos:
    • removed: 5.8, 6.0, 6.3
    • added: 5.11, 6.6, 7.1.1503
  • redhat (chefspec only, no kitchen testing):
    • removed: 5.8, 6.3
    • added: 5.9, 6.6, 7.1.1503