correct code in README.md to behavior described

[bgrayburn]

change || to && in Router.beforePopState example to match doc description

[ijjk]

Stats from current PR

Default Server Mode

General

	zeit/next.js canary	bgrayburn/next.js canary	Change
buildDuration	27.1s	26.6s	-480ms
nodeModulesSize	41.3 MB	41.3 MB	✓

Client Bundles (main, webpack, commons)

	zeit/next.js canary	bgrayburn/next.js canary	Change
main-HASH.js	17.9 kB	17.9 kB	✓
main-HASH.js gzip	6.56 kB	6.56 kB	✓
webpack-HASH.js	1.53 kB	1.53 kB	✓
webpack-HASH.js gzip	746 B	746 B	✓
commons.HASH.js	190 kB	190 kB	✓
commons.HASH.js gzip	61.6 kB	61.6 kB	✓
Overall change			✓

Client Bundles (main, webpack, commons) Modern

	zeit/next.js canary	bgrayburn/next.js canary	Change
main-HASH.module.js	16.2 kB	16.2 kB	✓
main-HASH.module.js gzip	6.28 kB	6.28 kB	✓
webpack-HASH.module.js	1.53 kB	1.53 kB	✓
webpack-HASH.module.js gzip	746 B	746 B	✓
commons.HASH.module.js	171 kB	171 kB	✓
commons.HASH.module.js gzip	55.4 kB	55.4 kB	✓
Overall change			✓

Client Pages

	zeit/next.js canary	bgrayburn/next.js canary	Change
_app.js	1.9 kB	1.9 kB	✓
_app.js gzip	905 B	905 B	✓
_error.js	12.1 kB	12.1 kB	✓
_error.js gzip	4.76 kB	4.76 kB	✓
hooks.js	1.06 kB	1.06 kB	✓
hooks.js gzip	600 B	600 B	✓
index.js	343 B	343 B	✓
index.js gzip	237 B	237 B	✓
link.js	8.13 kB	8.13 kB	✓
link.js gzip	3.49 kB	3.49 kB	✓
routerDirect.js	429 B	429 B	✓
routerDirect.js gzip	292 B	292 B	✓
withRouter.js	439 B	439 B	✓
withRouter.js gzip	290 B	290 B	✓
Overall change			✓

Client Pages Modern

	zeit/next.js canary	bgrayburn/next.js canary	Change
_app.module.js	1.79 kB	1.79 kB	✓
_app.module.js gzip	865 B	865 B	✓
_error.module.js	10.6 kB	10.6 kB	✓
_error.module.js gzip	4.31 kB	4.31 kB	✓
hooks.module.js	596 B	596 B	✓
hooks.module.js gzip	354 B	354 B	✓
index.module.js	319 B	319 B	✓
index.module.js gzip	238 B	238 B	✓
link.module.js	8.52 kB	8.52 kB	✓
link.module.js gzip	3.67 kB	3.67 kB	✓
routerDirect.module.js	417 B	417 B	✓
routerDirect.module.js gzip	292 B	292 B	✓
withRouter.module.js	427 B	427 B	✓
withRouter.module.js gzip	291 B	291 B	✓
Overall change			✓

Fetched pages

	zeit/next.js canary	bgrayburn/next.js canary	Change
link	2.8 kB	2.8 kB	✓
link gzip	848 B	850 B	⚠️ +2 B
index	2.75 kB	2.75 kB	✓
index gzip	838 B	840 B	⚠️ +2 B
withRouter	2.81 kB	2.81 kB	✓
withRouter gzip	836 B	839 B	⚠️ +3 B
Overall change			✓

---

Serverless Mode

General

	zeit/next.js canary	bgrayburn/next.js canary	Change
buildDuration	28.3s	28.4s	⚠️ +107ms
nodeModulesSize	41.3 MB	41.3 MB	✓

Client Bundles (main, webpack, commons)

	zeit/next.js canary	bgrayburn/next.js canary	Change
main-HASH.js	17.9 kB	17.9 kB	✓
main-HASH.js gzip	6.56 kB	6.56 kB	✓
webpack-HASH.js	1.53 kB	1.53 kB	✓
webpack-HASH.js gzip	746 B	746 B	✓
commons.HASH.js	190 kB	190 kB	✓
commons.HASH.js gzip	61.6 kB	61.6 kB	✓
Overall change			✓

Client Bundles (main, webpack, commons) Modern

	zeit/next.js canary	bgrayburn/next.js canary	Change
main-HASH.module.js	16.2 kB	16.2 kB	✓
main-HASH.module.js gzip	6.28 kB	6.28 kB	✓
webpack-HASH.module.js	1.53 kB	1.53 kB	✓
webpack-HASH.module.js gzip	746 B	746 B	✓
commons.HASH.module.js	171 kB	171 kB	✓
commons.HASH.module.js gzip	55.4 kB	55.4 kB	✓
Overall change			✓

Client Pages

	zeit/next.js canary	bgrayburn/next.js canary	Change
_app.js	1.9 kB	1.9 kB	✓
_app.js gzip	905 B	905 B	✓
_error.js	12.1 kB	12.1 kB	✓
_error.js gzip	4.76 kB	4.76 kB	✓
hooks.js	1.06 kB	1.06 kB	✓
hooks.js gzip	600 B	600 B	✓
index.js	343 B	343 B	✓
index.js gzip	237 B	237 B	✓
link.js	8.13 kB	8.13 kB	✓
link.js gzip	3.49 kB	3.49 kB	✓
routerDirect.js	429 B	429 B	✓
routerDirect.js gzip	292 B	292 B	✓
withRouter.js	439 B	439 B	✓
withRouter.js gzip	290 B	290 B	✓
Overall change			✓

Client Pages Modern

	zeit/next.js canary	bgrayburn/next.js canary	Change
_app.module.js	1.79 kB	1.79 kB	✓
_app.module.js gzip	865 B	865 B	✓
_error.module.js	10.6 kB	10.6 kB	✓
_error.module.js gzip	4.31 kB	4.31 kB	✓
hooks.module.js	596 B	596 B	✓
hooks.module.js gzip	354 B	354 B	✓
index.module.js	319 B	319 B	✓
index.module.js gzip	238 B	238 B	✓
link.module.js	8.52 kB	8.52 kB	✓
link.module.js gzip	3.67 kB	3.67 kB	✓
routerDirect.module.js	417 B	417 B	✓
routerDirect.module.js gzip	292 B	292 B	✓
withRouter.module.js	427 B	427 B	✓
withRouter.module.js gzip	291 B	291 B	✓
Overall change			✓

Serverless bundles

	zeit/next.js canary	bgrayburn/next.js canary	Change
_error.js	247 kB	247 kB	✓
_error.js gzip	66.3 kB	66.3 kB	-1 B
hooks.html	2.87 kB	2.87 kB	✓
hooks.html gzip	865 B	865 B	✓
index.js	248 kB	248 kB	✓
index.js gzip	66.6 kB	66.6 kB	-1 B
link.js	255 kB	255 kB	✓
link.js gzip	68.8 kB	68.8 kB	-1 B
routerDirect.js	248 kB	248 kB	✓
routerDirect.js gzip	66.5 kB	66.5 kB	-1 B
withRouter.js	248 kB	248 kB	✓
withRouter.js gzip	66.6 kB	66.6 kB	✓
Overall change			✓

[lfades]

@bgrayburn Thank you 💃