Add Steven Danna as a maintainer of Dev Tools

I've fixed a number of chef-shell and knife related bugs, written a
number of popular knife plugins that build on top of these systems,
and understand the related code well.
Remove all parts of 'shef'
Merge pull request #2485 from opscode/ssd/maintainer-app

Add Steven Danna as a maintainer of Dev Tools
Adding myself to relevant component maintainer
Merge pull request #2490 from jtimberman/jtimberman/maintainers

Adding myself to relevant component maintainer
Adding myself as a maintainer
Fixing formatting
Merge pull request #2510 from opscode/tball/maintainer

Adding myself as a maintainer
Add Seth Vargo as LT for ChefSpec
Merge pull request #2499 from juliandunn/trash-shef

Remove all parts of 'shef'
A memorial for Ezra Zygmuntowicz

Adding the --ez switch to Chef Solo, to memorialize Ezra. He was the
father of Chef Solo, and without his early advocacy and evangelism,
there would be no Chef today.

Rest in peace, Ez.
Add myself to MAINTAINERS
adding myself to MAINTAINERS
Use lists.
Add myself as a core maintainer.
Merge pull request #2526 from opscode/mcquin/maintainer

Make me a maintainer
Merge pull request #2516 from adamhjk/ez-mode

A memorial for Ezra Zygmuntowicz