revise usage example in Readme.md

fzaninotto / screenshot-as-a-service

Website screenshot service powered by node.js and phantomjs

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Closed chenhan1218 closed 11 years ago

chenhan1218 commented 11 years ago

revise usage example in Readme.md

Curl will not redirect http url if no parameter is passed. Adopt direct link in usage example to avoid the issue.

fzaninotto commented 11 years ago

Thanks!