add hashie, webmock, and versions to gemspec
begin updating readme
add client class
update spec helper and add books class
expand request module
add error classes
update class requirements and tests
update book method, test, and fixtures
comment out login code
write some failing tests
fix bug in spec helper
update spec and get tests to pass
add whitespace to fixture and write more tests
more tests
Merge pull request #7 from pemulis/master

Client for REST API
bump version after merging permulis' changes
edit README to reflect version
add author module, fixture, and tests
more book tests
add tests and comment about keys named 'key'