Add simplecov for code coverage

Conflicts:
	Gemfile.lock

spec/spec_helper.rb

@@ -8,6 +8,11 @@ root_pathname = spec_pathname.join('..').expand_path
 lib_pathname = root_pathname.join('lib')
 $LOAD_PATH.unshift(lib_pathname.to_s)
 
+# must be first require and started before any other requires so that it can measure coverage of all following required
+# code.  It is after the rubygems and bundler only because Bundler.setup supplies the LOAD_PATH to simplecov.
+require 'simplecov'
+SimpleCov.start
+
 require 'rspec/core'
 
 # Requires supporting ruby files with custom matchers and macros, etc,