C# Unity iOS/Android plugin for file picker API - repost

Goal: • To create an easy-to-use Unity native plugin to make use of the [login to view URL] API from C# in Unity games • To establish a simple method of calling functions from [login to view URL], in iOS/Android Unity apps Requirements: • Must make use of API available at [login to view URL] • Must properly integrate the [login to view URL] iOS and Android APIs into C# scripts in Unity • Must be compatible w/ Unity 3.5+ , Mobile Pro • All code & resources must be contained within a single directory titled "[login to view URL]", and delivered as a .unityPackage • All [login to view URL] UI should overlay elegantly over Unity-based UI • Wrapper code should automatically handle branching between iOS-native [login to view URL] calls and Android-native [login to view URL] calls • All code must be clearly commented • Project directory should include a README file which explains layout • Use documentation of plugins from [login to view URL] as an example of proper design for Unity native plugins