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/contacts/index.ts

@@ -145,16 +145,16 @@ export interface IContactName {
  */
 export class ContactName implements IContactName {
   constructor(public formatted?: string,
-              public familyName?: string,
-              public givenName?: string,
-              public middleName?: string,
-              public honorificPrefix?: string,
-              public honorificSuffix?: string) {}
+    public familyName?: string,
+    public givenName?: string,
+    public middleName?: string,
+    public honorificPrefix?: string,
+    public honorificSuffix?: string) { }
 }
 
 export interface IContactField {
   /** A string that indicates what type of field this is, home for example. */
-    type?: string;
+  type?: string;
   /** The value of the field, such as a phone number or email address. */
   value?: string;
   /** Set to true if this ContactField contains the user's preferred value. */
@@ -166,15 +166,15 @@ export interface IContactField {
  */
 export class ContactField implements IContactField {
   constructor(public type?: string,
-              public value?: string,
-              public pref?: boolean) {}
+    public value?: string,
+    public pref?: boolean) { }
 }
 
 export interface IContactAddress {
   /** Set to true if this ContactAddress contains the user's preferred value. */
   pref?: boolean;
   /** A string indicating what type of field this is, home for example. */
-    type?: string;
+  type?: string;
   /** The full address formatted for display. */
   formatted?: string;
   /** The full street address. */
@@ -194,20 +194,20 @@ export interface IContactAddress {
  */
 export class ContactAddress implements IContactAddress {
   constructor(public pref?: boolean,
-              public type?: string,
-              public formatted?: string,
-              public streetAddress?: string,
-              public locality?: string,
-              public region?: string,
-              public postalCode?: string,
-              public country?: string) {}
+    public type?: string,
+    public formatted?: string,
+    public streetAddress?: string,
+    public locality?: string,
+    public region?: string,
+    public postalCode?: string,
+    public country?: string) { }
 }
 
 export interface IContactOrganization {
   /** Set to true if this ContactOrganization contains the user's preferred value. */
   pref?: boolean;
   /** A string that indicates what type of field this is, home for example. */
-    type?: string;
+  type?: string;
   /** The name of the organization. */
   name?: string;
   /** The department the contract works for. */
@@ -226,7 +226,7 @@ export class ContactOrganization implements IContactOrganization {
     public department?: string,
     public title?: string,
     public pref?: boolean
-  ) {}
+  ) { }
 }
 
 /** Search options to filter navigator.contacts.  */
@@ -248,9 +248,9 @@ export interface IContactFindOptions {
  */
 export class ContactFindOptions implements IContactFindOptions {
   constructor(public filter?: string,
-              public multiple?: boolean,
-              public desiredFields?: string[],
-              public hasPhoneNumber?: boolean) {}
+    public multiple?: boolean,
+    public desiredFields?: string[],
+    public hasPhoneNumber?: boolean) { }
 }
 
 /**