minor cleanups to README
Add Gemfile to support testing
Switch from Test::Unit to MiniTest::Unit::TestCase
Add ::reset and ::reset_all methods to reset per-class options to their default
Use reset methods in test setup (fixes failures exposed via MiniTest random test order)
Ensure that options are always set to boolean values
Add ::templates method to enable template evaluation of values
Add tests for template evaluation (NYI)
finish adding ERB template evaluation for leaf nodes
README fixup
Merge branch 'feature-erb-values' into develop