Mantle/Mantle — pull request #363 by 5teev (2014-06-30 20:07:56+00:00)
Title: fix grammar in error message

Fixes very minor grammar annoyance in this error message:

NSAssert([models isKindOfClass:NSArray.class], @"Expected **a array** of MTLModels, got: %@", models);

Should be

NSAssert([models isKindOfClass:NSArray.class], @"Expected **an array** of MTLModels, got: %@", models);