updated docs

README.md

@@ -22,6 +22,7 @@ Some modules may depend on other modules. For example, the `polyline2d` module d
 ## Documentation
 
 - 2D
+    - [rounded_square](https://openhome.cc/eGossip/OpenSCAD/lib-rounded_square.html)
 	- [line2d](https://openhome.cc/eGossip/OpenSCAD/lib-line2d.html)
 	- [polyline2d](https://openhome.cc/eGossip/OpenSCAD/lib-polyline2d.html)
 	- [circular_sector](https://openhome.cc/eGossip/OpenSCAD/lib-circular_sector.html)

docs/lib-rounded_square.md

@@ -0,0 +1,44 @@
+# rounded_square
+
+Creates a rounded square or rectangle in the first quadrant. When center is true the square is centered on the origin.
+
+## Parameters
+
+- `size` : Accepts single value, square with both sides this length. It also accepts 2 value array `[x, y]`, rectangle with dimensions `x` and `y`.
+- `corner_r` : The corner is one-quarter of a circle (quadrant). The `corner_r` parameter determines the circle radius.
+- `center` : `false` (default), 1st (positive) quadrant, one corner at (0,0). `true`, square is centered at (0,0).
+- `$fa`, `$fs`, `$fn` : Used to control the four quadrants. Check [the circle module](https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Using_the_2D_Subsystem#circle) for more details.
+
+
+## Examples
+
+    include <rounded_square.scad>;
+
+    rounded_square(size = 50, corner_r = 5);
+
+![rounded_square](images/lib-rounded_square-1.JPG)
+
+	include <rounded_square.scad>;
+	
+	rounded_square(
+	    size = [50, 25],
+	    corner_r = 5, 
+	    center = true
+	);
+
+![rounded_square](images/lib-rounded_square-2.JPG)
+
+	include <rounded_square.scad>;
+	
+	$fn = 4;
+	rounded_square(
+	    size = [50, 25],
+	    corner_r = 5, 
+	    center = true
+	);
+
+![rounded_square](images/lib-rounded_square-3.JPG)
+
+
+
+