Add individual examples

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

examples/beamChain-2.scad

@@ -0,0 +1,21 @@
+// beamChain example 2
+
+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){
+
+  // Add an angle to the start of the beam
+  translate([0,-7*3,0]){
+    radiiPoints=beamPoints(2,1);
+    polygon(polyRound(beamChain(radiiPoints,offset1=0.5, offset2=-0.5, startAngle=45),20));
+  }
+
+  // Put a negative radius at the start for transationing to a flat surface
+  translate([0,-7*4,0]){
+    radiiPoints=beamPoints(2,1,rStart=-0.7);
+    polygon(polyRound(beamChain(radiiPoints,offset1=0.5, offset2=-0.5, startAngle=45),20));
+  }
+
+}