Add support for email attachments when there is no Mail.app account configured

[natan]

Currently if a customer does not have a Mail.app account configured, Aardvark's email reporter does not include attachments like logs and screenshots (which are so useful). For the common case of Gmail accounts, Aardvark could utilize Google's iOS library to send attachments directly from Aardvark.

[dfed]

I'd suggest adding a subpod with an EmailReporter subclass that has more fleshed-out Google support (and the Google library dependency) rather than shoving increased binary size onto all customers.

Thoughts on that approach? Not sure what the best binary size / simplicity of adoption trade-off is.

[natan]

Good point! This guide seems to go through the same exercise, with recommendations: http://www.dbotha.com/2014/12/04/optional-cocoapod-dependencies/

[NickEntin]

cc @EricMuller22