Customize the command used to install CocoaPods

From @NathanWalker on March 19, 2016 23:55

Because some CocoaPods can be finicky at best to get working with {N} plugins, it would probably help to be able to customize or specify a command to run a pod install.
For example, please see this issue:
https://github.com/segment-integrations/analytics-ios-integration-google-analytics/issues/3#issuecomment-164874798

The issue arises from the Segment-GoogleAnalytics pod and the solution posted above involves a custom install of CocoaPods and the usage of bundle exec pod install along with a Gemfile to circumvent the issues.

It would be nice that when running tns emulate ios with CocoaPods involved, a command line argument could be passed to provide a custom pod install command to be able to use this solution.

Working on this {N} plugin for Segment:
https://github.com/NathanWalker/nativescript-segment
Blocked by this at moment.

Copied from original issue: NativeScript/ios-runtime#535

Commencez par le flux tns emulate ios et suivez son exécution pour déterminer où CocoaPods lance pod install. Examinez la solution de contournement demandée avec bundle exec pod install et Gemfile, puis définissez comment une commande personnalisée serait fournie. Le travail est terminé lorsque le flux d’émulation iOS peut utiliser cette commande pour les projets nécessitant une installation personnalisée de CocoaPods.