Convert FIRGetOptions.initWithSource to factory method. (#655)#711

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rsgowman merged 3 commits intofirestore-api-changesfrom

rsgowman/get_options_factory

Feb 1, 2018

Commits on Jan 25, 2018

Convert FIRGetOptions.initWithSource to factory method.
rsgowman
committed

Commits on Jan 26, 2018

source -> optionsWithSource
rsgowman
committed

Commits on Feb 1, 2018

Swift: GetOptions.source(source:) -> source(_:)
rsgowman
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