Add additional presentation modifier (#16)

Sources/SafariView/Presentation.swift

@@ -257,7 +257,7 @@ public extension View {
     /// ```
     ///
     /// - Parameters:
-    ///   - item: A binding to an optional source of truth for the ``SafariView``. When the URL is non-nil, the system passes the URL to the modifier’s closure. You display this content in a ``SafariView`` that you create that the system displays to the user. If the URL changes, the system dismisses the ``SafariView`` and replaces it with a new one using the same process.
+    ///   - url: A binding to an optional source of truth for the ``SafariView``. When the URL is non-nil, the system passes the URL to the modifier’s closure. You display this content in a ``SafariView`` that you create that the system displays to the user. If the URL changes, the system dismisses the ``SafariView`` and replaces it with a new one using the same process.
     ///   - onDismiss: The closure to execute when dismissing the ``SafariView``
     ///   - safariView: A closure that returns the ``SafariView`` to present
     /// - Returns: The modified view
@@ -274,4 +274,49 @@ public extension View {
         )
     }
 
+    /// Presents a ``SafariView`` using the given URL as a data source for the ``SafariView``'s content
+    ///
+    /// Use this method when you need to present a ``SafariView`` with content from a custom data source. The example below shows a custom data source `InventoryItem` that the closure uses to populate the ``SafariView`` before it is shown to the user:
+    ///
+    /// ```swift
+    /// import Foundation
+    /// import SafariView
+    /// import SwiftUI
+    ///
+    /// struct InventoryItem {
+    ///     let title: String
+    ///     let url: URL
+    /// }
+    ///
+    /// struct InventoryList: View {
+    ///
+    ///     init(inventory: [InventoryItem]) {
+    ///         self.inventory = inventory
+    ///     }
+    ///
+    ///     var inventory: [InventoryItem]
+    ///
+    ///     @State private var selectedURL: URL?
+    ///
+    ///     var body: some View {
+    ///         List(inventory.indices, id: \.self) { index in
+    ///             Button(action: {
+    ///                 self.selectedURL = inventory[index].url
+    ///             }) {
+    ///                 Text(inventory[index].title)
+    ///             }
+    ///         }
+    ///         .safari(item: $selectedURL)
+    ///     }
+    ///
+    /// }
+    /// ```
+    ///
+    /// - Parameter url: A binding to an optional source of truth for the ``SafariView``. When the URL is non-nil, the system passes the URL to the modifier’s closure. You display this content in a ``SafariView`` that you create that the system displays to the user. If the URL changes, the system dismisses the ``SafariView`` and replaces it with a new one using the same process.
+    /// - Returns: The modified view
+    func safari(url: Binding<URL?>) -> some View {
+        safari(item: url, id: \.hashValue) { url in
+            SafariView(url: url)
+        }
+    }
 }