Use ruby objects for thrust configuration
Move spec files to match production code layout
Use require_relative in version.rake
Fix module namespacing
Backfill tests for Thrust::Executor
Backfill tests for Thrust::UserInput
Inject dependencies into Autotag tasks
Fix Autotag::List (was using configuration hash)
Fix failing tests in ExecutionHelper spec

Looks like system() before 2.0 cannot execute bash built-ins, and fails
with status 127 (Command Not Found).
Merge pull request #29 from cbguder/refactor

Finish refactor
Add stability badge: unstable

Stability: 2 - Unstable
The API is in the process of settling, but has not yet had
sufficient real-world testing to be considered stable. Backwards-compatibility
will be maintained if reasonable.

http://nodejs.org/api/documentation.html#documentation_stability_index