chore(tslint): add tslint & clean up code

src/plugins/devicemotion.ts

@@ -1,36 +1,36 @@
 import {Plugin, Cordova} from './plugin';
-import {Observable} from "rxjs/Observable";
+import {Observable} from 'rxjs/Observable';
 
-export interface accelerationData {
+export interface AccelerationData {
 
   /**
    * Amount of acceleration on the x-axis. (in m/s^2)
    */
-  x : number,
+  x: number;
 
   /**
    * Amount of acceleration on the y-axis. (in m/s^2)
    */
-  y : number,
+  y: number;
 
   /**
    * Amount of acceleration on the z-axis. (in m/s^2)
    */
-  z : number,
+  z: number;
 
   /**
    * Creation timestamp in milliseconds.
    */
-  timestamp : any
+  timestamp: any;
 
 }
 
-export interface accelerometerOptions {
+export interface AccelerometerOptions {
 
   /**
    * Requested period of calls to accelerometerSuccess with acceleration data in Milliseconds. Default: 10000
    */
-  frequency? : number
+  frequency?: number;
 
 }
 
@@ -74,7 +74,9 @@ export class DeviceMotion {
    * @returns {Promise<any>} Returns object with x, y, z, and timestamp properties
    */
   @Cordova()
-  static getCurrentAcceleration(): Promise<accelerationData> { return }
+  static getCurrentAcceleration(): Promise<AccelerationData> {
+    return;
+  }
 
   /**
    * Watch the device acceleration. Clear the watch by unsubscribing from the observable.
@@ -89,12 +91,14 @@ export class DeviceMotion {
    * subscription.unsubscribe();
    * ```
    * @param options
-   * @returns {Observable<accelerationData>}
+   * @returns {Observable<AccelerationData>}
    */
   @Cordova({
     callbackOrder: 'reverse',
     observable: true,
     clearFunction: 'clearWatch'
   })
-  static watchAcceleration (options?: accelerometerOptions): Observable<accelerationData> { return }
-}
+  static watchAcceleration(options?: AccelerometerOptions): Observable<AccelerationData> {
+    return;
+  }
+}