style(): unify docs and spacing (#1448)

* typo(barcode-scanner): fixe circle lint error

* typo(docs):  Unified the documentations

In some plugins the typescript markup was missing.
I also unified the console.log string from console.log("hello") to console.log('Hello') so any plugin page look the same.

src/@ionic-native/plugins/twitter-connect/index.ts

@@ -66,18 +66,18 @@ export class TwitterConnect extends IonicNativePlugin {
    * @returns {Promise<TwitterConnectResponse>} returns a promise that resolves if logged in and rejects if failed to login
    */
   @Cordova()
-  login(): Promise<TwitterConnectResponse> {return; }
+  login(): Promise<TwitterConnectResponse> { return; }
   /**
    * Logs out
    * @returns {Promise<any>} returns a promise that resolves if logged out and rejects if failed to logout
    */
   @Cordova()
-  logout(): Promise<any> {return; }
+  logout(): Promise<any> { return; }
 
   /**
    * Returns user's profile information
    * @returns {Promise<any>} returns a promise that resolves if user profile is successfully retrieved and rejects if request fails
    */
   @Cordova()
-  showUser(): Promise<any> {return; }
+  showUser(): Promise<any> { return; }
 }