[fix] Account for changes in npm-registry-client

When publishing, npm now makes a GET request to `/:pkg?write=true`
This prevents the `pkg` from including the querystring when checking
whether it exists in policy.{private,blacklist,whitelist}
[fix] if writeNpm exists proxy correctly with public route
[minor] stricter equals because it is more performant
Merge pull request #10 from evanlucas/bug/writetrue

[fix] Account for changes in npm-registry-client
[dist] Version bump. 1.3.3
Grammar fix
Merge pull request #13 from jjshoe/patch-1

Grammar fix