Rails 4.2 support

[pawandubey]

Trying out Koala 3.x with Rails 4.2.7 and it seems like it depends on json version >= 2.0 but rails itself locks it as json (>= 1.7.7, ~> 1.7).

So no way to use it with rails 4.2 apps as of now. Maybe drop json version to >= 1.7?

EDIT: I see that it was done to enable the quirks_mode option. Anyway around it?

[arsduo]

It wasn't actually necessary to up the JSON version -- 2.0 was supposed to fully support the JSON spec, but in the end I had to use quirks_mode. Since Rails 4 requires an earlier version, that's definitely the way to go -- Koala has to be compatible with Rails 4. Closing this and merging in the PR.