Update README

Sources/EmojiKitLibrary/EmojiManager.swift

@@ -30,9 +30,11 @@ public enum EmojiManager {
     /// - Parameters:
     ///   - version: The specific version you want to fetch (default: the highest supported version for a device's iOS version)
     ///   - showAllVariations: Some emojis inlcude skin type variations which increases the number of emojis drastically. (default: only the yellow neutral emojis are returned)
+    ///   - url: Specify the location of the `emoji_v<version_number>.json` files if needed (default: bundle resource path)
     /// - Returns: Array of categories with all emojis that are assigned to each category
-    public static func getAvailableEmojis(version: Version = .getSupportedVersion(), showAllVariations: Bool = false) -> [EmojiCategory] {
-        if let url = Bundle.main.url(forResource: version.fileName, withExtension: "json"), let content = try? Data(contentsOf: url), let result = try? JSONDecoder().decode([EmojiCategory].self, from: content) {
+    public static func getAvailableEmojis(version: Version = .getSupportedVersion(), showAllVariations: Bool = false, at url: URL? = nil) -> [EmojiCategory] {
+        let fileUrl = url ?? Bundle.module.url(forResource: version.fileName, withExtension: "json")
+        if let url = fileUrl, let content = try? Data(contentsOf: url), let result = try? JSONDecoder().decode([EmojiCategory].self, from: content) {
             var filteredEmojis: [EmojiCategory] = []
             for category in result {
                 let supportedEmojis = category.values.filter({