Create an array for query params with the same key

[deirdreg]

Query string parameters with the same key are now stored as an array in the queryParameters dictionary instead of being overwritten with the next value.

[chrismaddern]

4 space tabs 😉

[deirdreg]

Updated to use 4 space tabs

[chrismaddern]

Hey @deirdreg - this is definitely something we want to support, a couple outstanding issues:

1. It'd be great to see a test to know that it doesn't regress.
2. Currently it won't support create DPLDeepLink objects with array parameters (https://github.com/myfitnesspal/DeepLinkKit/blob/develop/DeepLinkKit/Categories/NSString%2BDPLQuery.m#L9) - i.e. initWithURL: and url are no longer symmetrical.

[wessmith]

@deirdreg Do you have interest in completing this? If so, the PR should be updated with the latest from master, support for serializing array values back into query params, and tests to support the changes. Thanks!