Don't report Gemnasium dependencies
Because the hydra gem is meant to be a stable snapshot of hydra gems,
it's almost always going to be behind on the most recent available
dependencies.  Showing this on the README may confuse a potential user
into believing the project is out of date.
Explain what "the stack" consists of
Merge pull request #43 from projecthydra/dont_report_dependencies

Don't report Gemnasium dependencies
Merge pull request #44 from projecthydra/explain_stack

Explain what "the stack" consists of