rename sample to example for demo purpose of the package

Author: AdamMusa

sample/.gitignore renamed to example/.gitignore

@@ -6,7 +6,7 @@ plugins {
 }
 
 android {
-    namespace = "com.example.sample"
+    namespace = "com.example.example"
     compileSdk = flutter.compileSdkVersion
     ndkVersion = flutter.ndkVersion
 
@@ -21,7 +21,7 @@ android {
 
     defaultConfig {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
-        applicationId = "com.example.sample"
+        applicationId = "com.example.example"
         // You can update the following values to match your application needs.
         // For more information, see: https://flutter.dev/to/review-gradle-config.
         minSdk = flutter.minSdkVersion

sample/.metadata renamed to example/.metadata

@@ -1,6 +1,6 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
     <application
-        android:label="sample"
+        android:label="example"
         android:name="${applicationName}"
         android:icon="@mipmap/ic_launcher">
         <activity

sample/README.md renamed to example/README.md

@@ -1,4 +1,4 @@
-package com.example.sample
+package com.example.example
 
 import io.flutter.embedding.android.FlutterActivity