package.json: update node version to match README.md

The node dependency version in the package.json file has fallen out
of sync with the required version specified in the README.md. Update
package.json to match the README.md.
Merge pull request #48 from tcort/node_version_bump

package.json: update node version to match README.md
Fix controls ordering bug when search.
Merge branch 'upstream' into dev
Merge branch 'ldap-controls-sssvlv' into dev
Try parse entries from ldap result that contains referrals.
Merge branch 'referral' into dev