Readability.js alternative to Mercury

[tarikd]

I was wondering if using Readability.js might be a good alternative to the Mercury API (if it's possible of course, I'm not at all familiar with browser extension development).

I remember a while ago the popular Reeder app doing the switch.

[Muffo]

In theory it should work, but the extension would then require permission to access all websites. Some users could see that as a security risk.

With the current solution, the extension only needs access to Feedly and the mercury API.

[Muffo]

See also #38