Need support for KeyboardAvoidingView

[marshal-truman]

In iOS, keyboard hides the cancel button which is at the bottom of the list. This needs to be fixed by supporting KeyboardAvoidingView. In Android, It works fine already.

[kahx]

Hey, you can add yourself KeyboardAvoidingView to index.js

return (
  <Overlay {...overlayProps}>
    <View style={[styles.overlayStyle, overlayStyle]}>
        <KeyboardAvoidingView
            behavior={Platform.OS === "ios" ? "padding" : "height"}
            keyboardVerticalOffset={Platform.select({ios: 10, android: 0})}
        >
          <View
              ...