RestClient::BadRequest Error and JSON::ParseError not Caught

[sshaw]

Using v2.6.5.

There's a ChargeBee::Error class but this code does not handle all exceptions so RestClient::BadRequest squeaks through.

The exception is not documented (as most Ruby libs and their exceptions aren't) but it and others are placed into the RestClient::Exceptions::EXCEPTION_MAP constant.

---

No JSON exceptions are caught here.

---

There's probably more but that's what I've seen so far.

Also note that RESTClient seems dead. But, maybe that's okay.