Use Bundler
Configure local time zone for tests
Avoid deprecated use of find(:first)
Eliminate deprecation warning on Rails 4
Only run tests with attr_protected on AR 3.2.x or less
Update version check for Rails 4
Add compatibility with Rails 4 partial inserts

For some background on this issue, see:
https://github.com/rails/rails/pull/9489
Set version to 3.0.0.beta1
Update requirements and docs
Clean up whitespace
Convert README to Markdown
Format two more codeblocks in README
Add README.md to gemspec
Define tasks for testing with various Rails versions
Require Ruby 1.9.3 or higher
Do not see false as blank at boolean columns

Signed-off-by: Norman Clarke <norman@njclarke.com>
OrderedHash is only needed by Ruby < 1.9; remove
Don't stringify keys so many times
class_inheritable_accessor is gone in Rails 3.2
Remove superflous use of `self`