docs(readme): simplify command line documentation.
style(reporter): remove unnecessary function wrap
style(reporter): clean up exports
style(reporter): split colors out into constants
feat(reporter): add timing information with the showTiming option and make verbose output in real time
docs(options): update options documentation for new timing options
feat(reporter): verbose reporter should print pass or fail after spec names

See #21.
feat(options): add a silent option which outputs nothing to the console

Use --silent on the command line or add `silent: true` to the options.