Document the public API
Also document AWS resource names
Flesh out README and tweak LICENSE.
Add a CHANGES file.
Link to LICENSE.md in README.
Rename LICENSE.txt to LICENSE.md
Merge pull request #13 from otherinbox/rm/documentation

Document the public API
Merge pull request #14 from otherinbox/bh/readme++

README++
Merge branch 'master' into rm/be-liberal

Conflicts:
	lib/skywriter/resource.rb
	lib/skywriter/resource_property.rb