Merge pull request #14 from BaseflowIT/feature/convert_to_library

Converted plugin to library

README.md

@@ -34,7 +34,7 @@ dependencies:
 ``` dart
 import 'package:permission_handler/permission_handler.dart';
 
-Map<PermissionGroup, PermissionStatus> permissions = await PermissionHandler().requestPermissions(PermissionGroup.Contacts);
+Map<PermissionGroup, PermissionStatus> permissions = await PermissionHandler.requestPermissions([PermissionGroup.contacts]);
 ```
 
 ### Checking permission
@@ -42,7 +42,7 @@ Map<PermissionGroup, PermissionStatus> permissions = await PermissionHandler().r
 ``` dart
 import 'package:permission_handler/permission_handler.dart';
 
-PermissionStatus permission = await PermissionHandler().checkPermissionStatus(PermissionGroup.Contacts);
+PermissionStatus permission = await PermissionHandler.checkPermissionStatus(PermissionGroup.contacts);
 ```
 
 ### Open app settings
@@ -50,7 +50,7 @@ PermissionStatus permission = await PermissionHandler().checkPermissionStatus(Pe
 ``` dart
 import 'package:permission_handler/permission_handler.dart';
 
-bool isOpened = await PermissionHandler().openAppSettings();
+bool isOpened = await PermissionHandler.openAppSettings();
 ```
 
 ### Show a rationale for requesting permission (Android only)
@@ -58,7 +58,7 @@ bool isOpened = await PermissionHandler().openAppSettings();
 ``` dart
 import 'package:permission_handler/permission_handler.dart';
 
-bool isShown = await PermissionHandler().shouldShowRequestPermissionRationale(PermissionGroup.Contacts);
+bool isShown = await PermissionHandler.shouldShowRequestPermissionRationale(PermissionGroup.contacts);
 ```
 
 This will always return `false` on iOS.

example/lib/main.dart

 import 'dart:io';
 
 import 'package:flutter/material.dart';
-import 'package:permission_handler/permission_enums.dart';
 import 'package:permission_handler/permission_handler.dart';
 
 void main() => runApp(new MyApp());

lib/permission_enums.dart

+part of permission_handler;
+
 /// Defines the state of a permission group
 enum PermissionStatus {
   /// Permission to access the requested feature is denied by the user.

lib/permission_handler.dart

+library permission_handler;
+
 import 'dart:async';
+import 'dart:convert';
 import 'dart:io';
 
 import 'package:flutter/services.dart';
-import 'package:permission_handler/permission_enums.dart';
-import 'package:permission_handler/utils/codec.dart';
+
+part 'package:permission_handler/permission_enums.dart';
+part 'package:permission_handler/utils/codec.dart';
 
 /// Provides a cross-platform (iOS, Android) API to request and check permissions.
 class PermissionHandler {

lib/utils/codec.dart

-import 'dart:convert';
-
-import 'package:permission_handler/permission_enums.dart';
+part of permission_handler;
 
 class Codec {
   static PermissionStatus decodePermissionStatus(dynamic value) {