gem, specs, README, and general consistency

spec/spec_helper.rb

@@ -0,0 +1,15 @@
+RSpec.configure do |config|
+  config.treat_symbols_as_metadata_keys_with_true_values = true
+  config.run_all_when_everything_filtered = true
+  config.filter_run :focus
+
+  # Run specs in random order to surface order dependencies. If you find an
+  # order dependency and want to debug it, you can fix the order by providing
+  # the seed, which is printed after each run.
+  #     --seed 1234
+  config.order = 'random'
+end
+
+def fixture(name)
+  File.join(File.dirname(__FILE__), 'fixtures', name)
+end