refactor(DBMeter):

src/plugins/dbmeter.ts

@@ -1,5 +1,7 @@
-import {Plugin, Cordova} from './plugin';
-import {Observable} from 'rxjs/Observable';
+import { Cordova, Plugin } from './plugin';
+import { Observable } from 'rxjs/Observable';
+
+
 /**
  * @name DB Meter
  * @description This plugin defines a global DBMeter object, which permits to get the decibel values from the microphone.
@@ -45,27 +47,27 @@ export class DBMeter {
     observable: true,
     clearFunction: 'stop'
   })
-  static start (): Observable<any> {return; }
+  static start(): Observable<any> { return; }
 
   /**
    * Stops listening
    * @private
    */
   @Cordova()
-  static stop (): Promise<any> {return; }
+  static stop(): Promise<any> { return; }
 
   /**
    * Check if the DB Meter is listening
    * @return {Promise<boolean>} Returns a promise that resolves with a boolean that tells us whether the DB meter is listening
    */
   @Cordova()
-  static isListening(): Promise<boolean> {return; }
+  static isListening(): Promise<boolean> { return; }
 
   /**
    * Delete the DB Meter instance
    * @return {Promise<any>} Returns a promise that will resolve if the instance has been deleted, and rejects if errors occur.
    */
   @Cordova()
-  static delete(): Promise<any> {return; }
+  static delete(): Promise<any> { return; }
 
 }