Update README.md

Author: aeagle

README.md

@@ -22,11 +22,11 @@ This space can be given a height and optionally a width (by default it will size
 
 These can be used within the top-level spaces **\<ViewPort /\>** and **\<Fixed /\>** or nested within other spaces.
 
-**\<Left /\>** / **\<Right /\>** 
+**\<Left /\>** and **\<Right /\>** 
 
 A space anchored to the left or right of the parent container/space. A size can be specified in pixels or as a percentage to determine its width.
 
-**\<Top /\>** / **\<Bottom /\>** 
+**\<Top /\>** and **\<Bottom /\>** 
 
 A space anchored to the top or bottom of the parent container/space. A size can be specified in pixels or as a percentage to determine its height.
 
@@ -36,6 +36,10 @@ A space anchored to the top or bottom of the parent container/space. A size can
 
 A space which consumes any available area left in the parent container/space taking into account any anchored spaces on every side.
 
+**\<Centered /\>** 
+
+A space which consumes any available area left in the parent container/space taking into account any anchored spaces on every side.
+
 ## Getting started
 
 To get started with React Spaces you need: