implement redicects
`page('/from', '/to');`
redirect by replace(to) instead show(to)
add redirect examples
add redirect test
update readme
make page.redirect() public
update docs
update tests
Merge branch 'master' into redirect

Conflicts:
	Readme.md
	index.js
	page.js
Merge branch 'master' into redirect

Conflicts:
	Readme.md
Merge pull request #140 from visionmedia/redirect

Redirects