Specs
Create initial Mondrian XML Example spec
Merge branch 'gh-master'

* gh-master:
  Create initial Mondrian XML Example spec
  Removed the Rubiks::Nodes namespace
  Add Builder; Add #to_xml on Schema
  Add column, aggregator and format_string to Measure
  Add Measure node
  Move rspec-pride to test group
  Add Dimension, Hierarchy and Level
  Moved test and development dependencies into Gemfile - allows for CI to not include development
  Turn off Travis CI email notifications
  Add needed requires to cube and schema
  Add Travis CI badge to README
  Add Schema node
  Add .travis.yml, Guardfile
  Limit AnnotatedNode values to name
  Update description in README and gemspec
  Remove Guardfile; update README
  Create nodes folder for AST

Conflicts:
	lib/rubiks.rb
	lib/rubiks/nodes/annotated_node.rb
	lib/rubiks/nodes/cube.rb
	spec/rubiks/cube_spec.rb
	spec/rubiks/nodes/annotated_node_spec.rb
	spec/rubiks/nodes/cube_spec.rb
	spec/rubiks/nodes/level_spec.rb
Add Schema#to_json spec