docs(README.md): update.

Author: sciborrudnicki

README.md

@@ -45,6 +45,68 @@ import {
 } from '@typescript-package/wrapper';
 ```
 
+### `Wrap`
+
+```typescript
+import { Wrap } from "@typescript-package/wrapper";
+
+// Initialize.
+const htmlTag = new Wrap('<', '>', 'div');
+
+// The `Wrap` object.
+console.log(htmlTag); // Output: Wrap {'<div>', #closing: '>', #opening: '<', #text: 'div'}
+
+console.log(htmlTag.valueOf()); // Output: <div>
+
+// Initialize.
+const bbCode = new Wrap('[', ']', 'quote');
+
+console.log(bbCode); // Output: Wrap {'[quote]', #closing: ']', #opening: '[', #text: 'quote'}
+
+console.log(bbCode.valueOf()); // Output: [quote]
+```
+
+### `Wrapper`
+
+```typescript
+import { Wrapper } from "@typescript-package/wrapper";
+
+// Initialize.
+const htmlTag = new Wrapper(
+  '<',
+  '>',
+  'div'
+);
+
+// The `Wrap` object.
+console.log(htmlTag); // Output: Wrapper {'<div>', #closing: '>', #opening: '<', #text: 'div'}
+
+console.log(htmlTag.valueOf()); // Output: <div>
+
+// Initialize.
+const bbCode = new Wrapper('[', ']', 'quote');
+
+console.log(bbCode); // Output: Wrapper {'[quote]', #closing: ']', #opening: '[', #text: 'quote'}
+
+// Wrap the valueOf [quote]
+console.log(bbCode.wrap()); // Output: [[quote]]
+
+// Wrap the valueOf [quote] with the specified `opening` and `closing` chars.
+console.log(bbCode.wrap(`(`, `)`)); // Output: ([quote])
+
+// Wrap the specified text with the `opening` and `closing` chars.
+console.log(bbCode.wrapOn(`/italic`)); // Output: [/italic]
+
+// Replace the `opening` and `closing` chars.
+console.log(bbCode.rewrap(`(`, `)`)); // Output: (quote)
+
+// Wraps the `text` inside.
+console.log(bbCode.wrapText(`(`, `)`)); // Output: [(quote)]
+
+// Returns the primitive value.
+console.log(bbCode.valueOf()); // Output: [quote]
+```
+
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