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Same origin policy

Turn off same-origin-policy in Chrome

chromium-browser --disable-web-security
google-chrome --disable-web-security

Windows: The target in the short-cut:
"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe"
   --disable-web-security

Mac:
open /Applications/Google\ Chrome.app/ --args --disable-web-security

In Firefox