Updated Scrollbar (markdown)

Scrollbar.md

@@ -1 +1,41 @@
-WIP
+Scrollbars are objects, the user can scroll vertically or horizontally, this can change the value.<br>
+Here is a example of how to create a standard scrollbar:
+
+````lua
+local mainFrame = NyoUI.createFrame("myFirstFrame"):show()
+local aScrollbar = mainFrame:addScrollbar("myFirstScrollbar"):show()
+````
+
+This will create a default label with a size 5 width and 1 height on position 1 1 (relative to its parent frame), the default background is the colors.gray, the default text color is colors.black. the default bar type is vertical, the default symbol is " " and the default symbol color is colors.lightGray. The default zIndex is 5.
+
+Here are all possible functions available for scrollbars. Remember scrollbar inherit from [object](https://github.com/NoryiE/NyoUI/wiki/Object):
+
+## setSymbol
+Changes the symbol
+
+````lua
+local mainFrame = NyoUI.createFrame("myFirstFrame"):show()
+local aScrollbar = mainFrame:addScrollbar("myFirstScrollbar"):setSymbol("X"):show()
+````
+**args:** char<br>
+**returns:** the object<br>
+
+## setSymbolColor
+Changes the symbol color
+
+````lua
+local mainFrame = NyoUI.createFrame("myFirstFrame"):show()
+local aScrollbar = mainFrame:addScrollbar("myFirstScrollbar"):setSymbol("X"):setSymbolColor(colors.green):show()
+````
+**args:** color<br>
+**returns:** the object<br>
+
+## setBarType
+If the bar goes vertically or horizontally
+
+````lua
+local mainFrame = NyoUI.createFrame("myFirstFrame"):show()
+local aScrollbar = mainFrame:addScrollbar("myFirstScrollbar"):setBarType("horizontal"):show()
+````
+**args:** "vertical" or "horizontal"<br>
+**returns:** the object<br>