docs: fix examples and table of contents

Author: saulotoledo

README.md

@@ -19,12 +19,12 @@ Source code is available [here](https://github.com/pleerock/class-transformer-de
   - [Node.js](#nodejs)
   - [Browser](#browser)
 - [Methods](#methods)
-    - [plainToClass](#plaintoclass)
-    - [plainToClassFromExist](#plaintoclassfromexist)
-    - [classToPlain](#classtoplain)
-    - [classToClass](#classtoclass)
-    - [serialize](#serialize)
-    - [deserialize and deserializeArray](#deserialize-and-deserializearray)
+  - [plainToClass](#plaintoclass)
+  - [plainToClassFromExist](#plaintoclassfromexist)
+  - [classToPlain](#classtoplain)
+  - [classToClass](#classtoclass)
+  - [serialize](#serialize)
+  - [deserialize and deserializeArray](#deserialize-and-deserializearray)
 - [Enforcing type-safe instance](#enforcing-type-safe-instance)
 - [Working with nested objects](#working-with-nested-objects)
   - [Providing more than one type option](#providing-more-than-one-type-option)
@@ -36,7 +36,7 @@ Source code is available [here](https://github.com/pleerock/class-transformer-de
 - [Skipping private properties, or some prefixed properties](#skipping-private-properties-or-some-prefixed-properties)
 - [Using groups to control excluded properties](#using-groups-to-control-excluded-properties)
 - [Using versioning to control exposed and excluded properties](#using-versioning-to-control-exposed-and-excluded-properties)
-- [Сonverting date strings into Date objects](#%d0%a1onverting-date-strings-into-date-objects)
+- [Сonverting date strings into Date objects](#сonverting-date-strings-into-date-objects)
 - [Working with arrays](#working-with-arrays)
 - [Additional data transformation](#additional-data-transformation)
   - [Basic usage](#basic-usage)
@@ -211,7 +211,7 @@ Now you can use `users[0].getName()` and `users[0].isAdult()` methods.
 
 ## Methods
 
-#### plainToClass
+### plainToClass
 
 This method transforms a plain javascript object to instance of specific class.
 
@@ -221,7 +221,7 @@ import {plainToClass} from "class-transformer";
 let users = plainToClass(User, userJson); // to convert user plain object a single user. also supports arrays
 ```
 
-#### plainToClassFromExist
+### plainToClassFromExist
 
 This method transforms a plain object into a instance using a already filled Object which is a instance from the target class.
 
@@ -232,7 +232,7 @@ defaultUser.role = 'user';
 let mixedUser = plainToClassFromExist(defaultUser, user); // mixed user should have the value role = user when no value is set otherwise.
 ```
 
-#### classToPlain
+### classToPlain
 
 This method transforms your class object back to plain javascript object, that can be `JSON.stringify` later.
 
@@ -241,7 +241,7 @@ import {classToPlain} from "class-transformer";
 let photo = classToPlain(photo);
 ```
 
-#### classToClass
+### classToClass
 
 This method transforms your class object into new instance of the class object.
 This maybe treated as deep clone of your objects.
@@ -253,7 +253,7 @@ let photo = classToClass(photo);
 
 You can also use a `ignoreDecorators` option in transformation options to ignore all decorators you classes is using.
 
-#### serialize
+### serialize
 
 You can serialize your model right to the json using `serialize` method:
 
@@ -264,7 +264,7 @@ let photo = serialize(photo);
 
 `serialize` works with both arrays and non-arrays.
 
-#### deserialize and deserializeArray
+### deserialize and deserializeArray
 
 You can deserialize your model to from a json using `deserialize` method:
 
@@ -580,7 +580,7 @@ You can pass any number of prefixes and all properties that begin with these pre
 For example:
 
 ```typescript
-import {Expose} from "class-transformer";
+import {Expose, classToPlain} from "class-transformer";
 
 export class User {
 
@@ -596,15 +596,15 @@ export class User {
 
     @Expose()
     get name() {
-        return this.firstName + " " + this.lastName;
+        return this._firstName + " " + this._lastName;
     }
 
 }
 
 const user = new User();
 user.id = 1;
 user.setName("Johny", "Cage");
-user._password = 123;
+user._password = "123";
 
 const plainUser = classToPlain(user, { excludePrefixes: ["_"] });
 // here plainUser will be equal to
@@ -616,9 +616,8 @@ const plainUser = classToPlain(user, { excludePrefixes: ["_"] });
 You can use groups to control what data will be exposed and what will not be:
 
 ```typescript
-import {Exclude, Expose} from "class-transformer";
+import {Exclude, Expose, classToPlain} from "class-transformer";
 
-@Exclude()
 export class User {
 
     id: number;
@@ -631,10 +630,7 @@ export class User {
     @Expose({ groups: ["user"] }) // this means that this data will be exposed only to users
     password: string;
 }
-```
 
-```typescript
-import {classToPlain} from "class-transformer";
 let user1 = classToPlain(user, { groups: ["user"] }); // will contain id, name, email and password
 let user2 = classToPlain(user, { groups: ["admin"] }); // will contain id, name and email
 ```
@@ -645,9 +641,8 @@ If you are building an API that has different versions, class-transformer has ex
 You can control which properties of your model should be exposed or excluded in what version. Example:
 
 ```typescript
-import {Exclude, Expose} from "class-transformer";
+import {Exclude, Expose, classToPlain} from "class-transformer";
 
-@Exclude()
 export class User {
 
     id: number;
@@ -660,10 +655,7 @@ export class User {
     @Expose({ since: 2.1 }) // this means that this property will be exposed for version starting from 2.1
     password: string;
 }
-```
 
-```typescript
-import {classToPlain} from "class-transformer";
 let user1 = classToPlain(user, { version: 0.5 }); // will contain id and name
 let user2 = classToPlain(user, { version: 0.7 }); // will contain id, name and email
 let user3 = classToPlain(user, { version: 1 }); // will contain id and name