Add Carthage support#26

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PierrePerrin wants to merge 6 commits intoRxSwiftCommunity:masterfrom

PierrePerrin:develop

Commits on Nov 9, 2018

add cartahge support
Pierre
committed
Update carthage
Pierre
committed
Update iOS deployment version
Pierre
committed
Remove useless scripts
Pierre
committed
remove checkouts carthage files
Pierre
committed
Update Gitignore
Pierre
committed