feat(file): add system paths

src/plugins/file.ts

@@ -1,4 +1,4 @@
-import { Plugin, pluginWarn } from './plugin';
+import {CordovaProperty, Plugin, pluginWarn} from './plugin';
 
 declare var window: any;
 declare var cordova: any;
@@ -350,9 +350,9 @@ export declare var FileError: {
  * ```
  * import { File } from 'ionic-native';
  *
- * declare var cordova: any;
+ * const dataDirectory: string = File.dataDirectory;
- * const fs:string = cordova.file.dataDirectory;
+ *
- * File.checkDir(this.fs, 'mydir').then(_ => console.log('yay')).catch(err => console.log('boooh'));
+ * File.checkDir(dataDirectory, 'mydir').then(_ => console.log('yay')).catch(err => console.log('boooh'));
  * ```
  *
  *  This plugin is based on several specs, including : The HTML5 File API http://www.w3.org/TR/FileAPI/
@@ -367,6 +367,80 @@ export declare var FileError: {
   repo: 'https://github.com/apache/cordova-plugin-file'
 })
 export class File {
+
+  /**
+   *  Read-only directory where the application is installed.
+   */
+  @CordovaProperty
+  static applicationDirectory: string;
+
+  /**
+   *  Read-only directory where the application is installed.
+   */
+  @CordovaProperty
+  static applicationStorageDirectory: string;
+
+  /**
+   * Where to put app-specific data files.
+   */
+  @CordovaProperty
+  static dataDirectory: string;
+
+  /**
+   * Cached files that should survive app restarts.
+   * Apps should not rely on the OS to delete files in here.
+   */
+  @CordovaProperty
+  static cacheDirectory: string;
+
+  /**
+   * Android: the application space on external storage.
+   */
+  @CordovaProperty
+  static externalApplicationStorageDirectory: string;
+
+  /**
+   *  Android: Where to put app-specific data files on external storage.
+   */
+  @CordovaProperty
+  static externalDataDirectory: string;
+
+  /**
+   * Android: the application cache on external storage.
+   */
+  @CordovaProperty
+  static externalCacheDirectory: string;
+
+  /**
+   * Android: the external storage (SD card) root.
+   */
+  @CordovaProperty
+  static externalRootDirectory: string;
+
+  /**
+   * iOS: Temp directory that the OS can clear at will.
+   */
+  @CordovaProperty
+  static tempDirectory: string;
+
+  /**
+   * iOS: Holds app-specific files that should be synced (e.g. to iCloud).
+   */
+  @CordovaProperty
+  static syncedDataDirectory: string;
+
+  /**
+   * iOS: Files private to the app, but that are meaningful to other applications (e.g. Office files)
+   */
+  @CordovaProperty
+  static documentsDirectory: string;
+
+  /**
+   * BlackBerry10: Files globally available to all apps
+   */
+  @CordovaProperty
+  static sharedDirectory: string;
+
   static cordovaFileError: {} = {
     1: 'NOT_FOUND_ERR',
     2: 'SECURITY_ERR',