Add individual examples

Having one example per file will make for a integration and there
live demo links with CadHub.
Resolves #29.

examples/beamChain-1.scad

@@ -0,0 +1,29 @@
+// beamChain example 1
+
+include <Round-Anything-1.0.4/polyround.scad>
+
+function beamPoints(r1,r2,rStart=0,rEnd=0)=[[0,0,rStart],[2,8,0],[5,4,r1],[15,10,r2],[17,2,rEnd]];
+
+linear_extrude(1){
+
+  // chained lines by themselves
+  translate(){
+    radiiPoints=beamPoints(0,0);
+    polygon(polyRound(beamChain(radiiPoints,offset1=0.02, offset2=-0.02),20));
+  }
+
+
+  // Add some radii to the line transitions
+  translate([0,-7,0]){
+    radiiPoints=beamPoints(2,1);
+    for(i=[0: len(beamPoints(2,1))]){color("red")translate([radiiPoints[i].x,radiiPoints[i].y,0])cylinder(d=0.2, h=1);}
+    polygon(polyRound(beamChain(radiiPoints,offset1=0.02, offset2=-0.02),20));
+  }
+
+  // Give make the lines beams with some thickness
+  translate([0,-7*2,0]){
+    radiiPoints=beamPoints(2,1);
+    polygon(polyRound(beamChain(radiiPoints,offset1=0.5, offset2=-0.5),20));
+  }
+
+}