Capture rspec deprecation warnings

RSpec 2.99.beta2 is just rspec 2.14 with extra deprecation warnings to prepare you for rspec 3.  Currently, there are 20 deprecation warnings.  I updated so the project will capture these deprecation warnings in `rspec.log`.

[transpec](https://github.com/yujinakayama/transpec) fixes 15 of the 20 warnings, and cleans everything up to use the newer (and nicer, IMHO) expectation syntax.  However, running transpec will create a big diff that might conflict w/ some existing PRs.

I'll send transpec in a separate PR just to show what the changes look like, but you can re-run it anytime when there's a lull in PRs.