fix: create readme file to help with package integration

clients/dart/dart_cac_client/README.md

@@ -1,39 +1,79 @@
-<!--
-This README describes the package. If you publish this package to pub.dev,
-this README's contents appear on the landing page for your package.
+# Dart CAC Client
 
-For information about how to write a good package README, see the guide for
-[writing package pages](https://dart.dev/guides/libraries/writing-package-pages).
+This package provides a Dart interface for the CAC (Configuration as Code) client, allowing you to interact with the CAC server to retrieve and manage configurations.
 
-For general information about developing packages, see the Dart guide for
-[creating packages](https://dart.dev/guides/libraries/create-library-packages)
-and the Flutter guide for
-[developing packages and plugins](https://flutter.dev/developing-packages).
--->
+## Table of Contents
+- [Dart CAC Client](#dart-cac-client)
+  - [Table of Contents](#table-of-contents)
+  - [Installation](#installation)
+  - [Usage](#usage)
+    - [Creating a Client](#creating-a-client)
+    - [Starting Polling for Updates](#starting-polling-for-updates)
+    - [Retrieving Configurations](#retrieving-configurations)
+    - [Getting Default Configurations](#getting-default-configurations)
+    - [Getting Resolved Configurations](#getting-resolved-configurations)
+    - [Getting Last Modified Timestamp](#getting-last-modified-timestamp)
+    - [Disposing the Client](#disposing-the-client)
 
-TODO: Put a short description of the package here that helps potential users
-know whether this package might be useful for them.
+## Installation
 
-## Features
+Add the following dependency to your `pubspec.yaml` file:
 
-TODO: List what your package can do. Maybe include images, gifs, or videos.
+```yaml
+dependencies:
+  dart_cac_client:
+    git:
+      url: [email protected]:your_repo/dart_cac_client.git
+```
 
-## Getting started
+## Usage
 
-TODO: List prerequisites and provide or point to information on how to
-start using the package.
+### Creating a Client
+To create a new CAC client, instantiate the DartCacClient class with the tenant name, update frequency (in seconds), and host URL
 
-## Usage
+```dart
+final client = DartCacClient('dev', 60, 'http://localhost:8080');
+```
+
+### Starting Polling for Updates
+Use the cacStartPolling method to start polling for configuration updates for the specified tenant:
+
+```dart
+client.cacStartPolling("<tenant name>");
+```
+
+### Retrieving Configurations
+Use the getConfigs method to retrieve configurations based on a filter query and filter prefix:
+```dart
+String configs = client.getConfigs('{"country": "India"}', 'country');
+```
 
-TODO: Include short and useful examples for package users. Add longer examples
-to `/example` folder.
+### Getting Default Configurations
+Use the getDefaultConfig method to retrieve the default configurations for the specified keys:
 
 ```dart
-const like = 'sample';
+String defaultConfigs = client.getDefaultConfig("india");
 ```
 
-## Additional information
+### Getting Resolved Configurations
+Use the getResolvedConfig method to retrieve resolved configurations based on the provided query, keys, and merge strategy:
 
-TODO: Tell users more about the package: where to find more information, how to
-contribute to the package, how to file issues, what response they can expect
-from the package authors, and more.
+
+```dart
+String resolvedConfigs = client.getResolvedConfig(
+    '{"query": "example"}', "key1, key2", MergeStrategy.MERGE/MergeStrategy.REPLACE);
+```
+
+
+### Getting Last Modified Timestamp
+Use the getCacLastModified method to get the last modified timestamp of the configurations:
+
+```dart
+String lastModified = client.getCacLastModified();
+```
+
+### Disposing the Client
+Ensure that you dispose of the client properly to free up resources:
+```dart
+client.dispose();
+```

clients/dart/dart_cac_client/lib/cac_client.dart

@@ -10,18 +10,13 @@ final ffi.DynamicLibrary _lib = ffi.DynamicLibrary.open(_libName);
 // Helper to get the correct library name based on the platform
 String get _libName {
   if (Platform.isWindows) {
-    return path.join(
-        '/Users/subhash/working-repos/github/superposition/target/debug/',
-        'cac_client.dll');
+    return path.join(path.current, '/../../../target/debug/', 'cac_client.dll');
   }
   if (Platform.isMacOS) {
     return path.join(
-        '/Users/subhash/working-repos/github/superposition/target/debug/',
-        'libcac_client.dylib');
+        path.current, '/../../../target/debug/', 'libcac_client.dylib');
   }
-  return path.join(
-      '/Users/subhash/working-repos/github/superposition/target/debug/',
-      'libcac_client.so');
+  return path.join(path.current, '/../../../target/debug/', 'libcac_client.so');
 }
 
 // Bind the C functions