Merge pull request tchapi#4 from jaychsu/master

Add some interesting markups

Author: tchapi

README.md

@@ -138,3 +138,47 @@ _Image with alt :_
 ![picture alt](http://www.brightlightpictures.com/assets/images/portfolio/thethaw_header.jpg "Title is optional")
 
     Markup : ![picture alt](http://www.brightlightpictures.com/assets/images/portfolio/thethaw_header.jpg "Title is optional")
+
+Foldable text:
+
+<details>
+  <summary>Title 1</summary>
+  <p>Content 1 Content 1 Content 1 Content 1 Content 1</p>
+</details>
+<details>
+  <summary>Title 2</summary>
+  <p>Content 2 Content 2 Content 2 Content 2 Content 2</p>
+</details>
+
+    Markup : <details>
+               <summary>Title 1</summary>
+               <p>Content 1 Content 1 Content 1 Content 1 Content 1</p>
+             </details>
+
+Hotkey:
+
+<kbd>⌘F</kbd>
+
+<kbd>⇧⌘F</kbd>
+
+    Markup : <kbd>⌘F</kbd>
+
+Hotkey list:
+
+| Key | Symbol |
+| --- | --- |
+| Option | ⌥ |
+| Control | ⌃ |
+| Command | ⌘ |
+| Shift | ⇧ |
+| Caps Lock | ⇪ |
+| Tab | ⇥ |
+| Esc | ⎋ |
+| Power | ⌽ |
+| Return | ↩ |
+| Delete | ⌫ |
+| Up | ↑ |
+| Down | ↓ |
+| Left | ← |
+| Right | → |
+