#pragma to ignore the undeclared selector warning
checking for nil to prevent crash
Merge pull request #29 from kgn/master

Disabled a missing selector warning and added a nil check to prevent a crash
Adding top-level source group
[Issue #28] Adding @warning about 2038 problem with timestamp calculation
Merge branch 'master' of github.com:mattt/TransformerKit
Merge remote-tracking branch 'mattt/master'

Conflicts:
	TransformerKit/NSValueTransformer+TransformerKit.m