remove todo
Merge branch 'jeffswartz-v2.2-docs' into modernization
add archiving sample walkthrough
update version number to follow semver scheme
specify version number in a way rubygems likes it (no dashes, only dots)
add `rake yard` task to generate documentation
add development and contribution guidelines
Merge branch 'modernization' into feat.rake-doc-generation-task
adds documentation generation to the development guidelines
Merge pull request #2 from aoberoi/feat.rake-doc-generation-task

Rake doc generation task
Generated reference docs.