Fixed failing unit tests in default_spec

Everything was asking for :attr_setter, when the #let actually
defiend :attr_writer.  Renamed the latter to match the former,
verified passage, also intentionally broke things temporarily to
verify that the tests are even valid.
Bump to version 0.1.1 for failing test bugfix
Merge pull request #1 from ethanrowe/master

Fix for failing default spec tests