updated docs

docs/lib-arc.md

@@ -11,7 +11,8 @@ Creates an arc. You can pass a 2 element vector to define the central angle. Its
 
 
 ## Examples
-    
+
+    include<circular_sector.scad>;    
     include <arc.scad>;
     
     $fn = 24;
@@ -20,6 +21,7 @@ Creates an arc. You can pass a 2 element vector to define the central angle. Its
 
 ![arc](images/lib-arc-1.JPG)
 
+    include<circular_sector.scad>; 
     include <arc.scad>;
     
     $fn = 24;
@@ -28,6 +30,7 @@ Creates an arc. You can pass a 2 element vector to define the central angle. Its
 
 ![arc](images/lib-arc-2.JPG)
 
+    include<circular_sector.scad>; 
     include <arc.scad>;
     
     $fn = 24;

docs/lib-parse_number.md

@@ -8,6 +8,8 @@ Parses the string argument as an number. It depends on the `split_str` and the `
 
 ## Examples
 
+	include <sub_str.scad>;
+	include <split_str.scad>;
     include <parse_number.scad>;
     
 	echo(parse_number("10") + 1);    // ECHO: 11

docs/lib-polyline2d.md

@@ -13,6 +13,7 @@ Creates a polyline from a list of `x`, `y` coordinates. When the end points are
 
 ## Examples
 
+    include <line2d.scad>;
     include <polyline2d.scad>;
 
     $fn = 24;
@@ -20,6 +21,7 @@ Creates a polyline from a list of `x`, `y` coordinates. When the end points are
 
 ![polyline2d](images/lib-polyline2d-1.JPG)
 
+    include <line2d.scad>;
     include <polyline2d.scad>;
     
     $fn = 24;
@@ -28,6 +30,7 @@ Creates a polyline from a list of `x`, `y` coordinates. When the end points are
 
 ![polyline2d](images/lib-polyline2d-2.JPG)
 
+    include <line2d.scad>;
     include <polyline2d.scad>;
     
     $fn = 24;

docs/lib-polyline3d.md

@@ -12,6 +12,7 @@ Creates a polyline from a list of `[x, y, z]` coordinates. It depends on the `li
 
 ## Examples
 
+    include <line3d.scad>;
     include <polyline3d.scad>;
 
 	polyline3d(
@@ -27,6 +28,7 @@ Creates a polyline from a list of `[x, y, z]` coordinates. It depends on the `li
 
 ![polyline3d](images/lib-polyline3d-1.JPG)
 
+    include <line3d.scad>;
     include <polyline3d.scad>;
 
 	polyline3d(
@@ -43,6 +45,7 @@ Creates a polyline from a list of `[x, y, z]` coordinates. It depends on the `li
 
 ![polyline3d](images/lib-polyline3d-2.JPG)
 
+    include <line3d.scad>;
     include <polyline3d.scad>;
 
 	polyline3d(
@@ -60,6 +63,7 @@ Creates a polyline from a list of `[x, y, z]` coordinates. It depends on the `li
 
 ![polyline3d](images/lib-polyline3d-3.JPG)
 
+    include <line3d.scad>;
     include <polyline3d.scad>;
     
 	r = 20;