Support for device brand and model.#4

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mspiegel wants to merge 4 commits intoua-parser:masterfrom

mspiegel:master

Commits on Jan 15, 2015

Support for device brand and model.
Michael Spiegel
committed

Commits on Jan 16, 2015

Simplify device parsing.
Michael Spiegel
committed
Revert unnecessary changes to equals method.
Michael Spiegel
committed
Finish cleanup of equals() method.
Michael Spiegel
committed