refactored operation setup to use as_instance_method
added tests for automigrations migration string
made tests run for automigration source code
added tests for snapshots to recognize changes if attr is removed
made tests run for snapshotting attributes
rename attribute if 1 attr removed and 1 attr new
new classes and new attributes now appear as comments in automigrations
can now create identation for migration_string
Rewrote first part of README.md.
added failing test todo
rename class if one removed and one added
ignored files for presentation
added todo
added tests of rake task for automigrations
new accessor with class as comment in migration string
corrected typo in Automigration Test
Merge branch 'develop' into niccokunzmann/automigration
Removed 'gem install maglevrecord' from .travis.yml.
made tests for rake migrate:auto? run
made migrate:auto? tests run in context of all test - removed side effect of RootedBook