updates for @shutterstock

◦ remove dupes
◦ add locations
◦ bump dates

The following jobs are currently listed with Perl in their descriptions:
◦ Perl Software Engineer         New York       NY
◦ Perl Software Engineer         San Francisco  CA
◦ Perl Software Engineer         Denver         CO
◦ Perl Software Engineer         Austin         TX
◦ Software Engineer              New York       NY
◦ Software Engineer              San Francisco  CA
◦ Senior Software Engineer       New York       NY
◦ Infrastructure Engineer        New York       NY
◦ International Search Engineer  New York       NY

For details see:
http://www.shutterstock.com/jobs/listings
Merge pull request #64 from patch/master

updates for @shutterstock