Updating the readme with content about direction type and singleton. (#…

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microsoft · Oct 3, 2023 · 084b363 · 084b363
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@@ -12,6 +12,14 @@ Fluent UI System Icons are a collection of familiar, friendly and modern icons f
 
 - [View the full list of filled icons](icons_filled.md)
 
+
+## Direction
+Within the metadata.json file for an icon, a property named `directionType` is used to indicate the direction of the icon. This property can have one of the following values:
+- `unique`, meaning that the icon is unique and has a specific RTL and LTR version
+- `mirror`, meaning that the icon can be mirrored for RTL or LTR languages
+
+The property `singleton` is also used to indicate the default direction that should be used for the icon. 
+
 ## Installation
 
 ### Android