correct publicsuffix import

[Eriner]

This fixes the build that otherwise fails due to an invalid import (package has moved).

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[louiscv]

This was the fix I was looking for!
I love you

[idanka]

I can not solve it
$ go get code.google.com/p/go.net/publicsuffix
package code.google.com/p/go.net/publicsuffix: unrecognized import path "code.google.com/p/go.net/publicsuffix" (parse https://code.google.com/p/go.net/publicsuffix?go-get=1: no go-import meta tags)

[jeffbyrnes]

This fixes #7

[concatime]

Please, get it merged!

[jspiro]

+1

[aww-aww]

Covered by another approved pull request already.