When I try to change the linked reference of a local JavaScript file to a GitHub raw version my test file stops working. The error is:
Refused to exe
raw.github.com is not truely raw access to file asset,
but a view rendered by Rails.
So accessing raw.github.com is much heavier than needed.
I don't know why raw.github.com is implemented as a Rails view.
Instead of fix this route issue, GitHub added a X-Content-Type-Options: nosniff header.
Workaround:
user.github.io/repo