Add examples around tags
before(:all)
Revert "before(:all)"

This reverts commit 1744e400d979f348c29d78325739dcf67ddc3935.
Add tag model
Refactor around 'default' procs
Add CreateTags
Pass spec for CreateTags
Add DescribeTags
Add examples around tagging
Fix tag_set
Implement a copy constructor
Implement memoizable fields
Add pry-debugger
Tags with DescribeInstances is working