Add all-ruby-quine as a sample code

This sample code works on all release versions of Ruby, from Ruby 0.49.

sample/all-ruby-quine.rb

@@ -0,0 +1,24 @@
+          eval($s=("t='eval($s=('+d=34.chr;s=3
+        2.chr+$s*i=8;v=$VERSION||eval('begin;v=V
+      ERSION;rescue;v||RUBY_VERSION;end');f=('?'*8
+    +'A|'+'?'*20+'G?c'+'?'*15+'A@CXx@~@_`OpGxCxp@~pO
+  xS|O~G?c?q?xC`AP|q?x_|C_xC_xO@H@cG?G?qA|_|_`GCpOxC|H
+NFccqq@`_|OF@`?q?x_@x_x_`GB`O``O~G?C@qCxCxP@D@|G~C?pO|C?
+  pO|C?AP|A~HNN`ccxC|Q@L@B"+"GpGpc@p?x_`GB`???_@FO|OB@
+     xC|P`@?c?q?HPx@~@_`G@`????@L^`?q?x?xq@|_|O~GC`
+        xA~@_@GBD').unpack('c*');w=4+v.length*u=
+           15;r=10.chr;j=0;while-24+w*u>i=1+i
+              ;x=i%w;x>0||t=t+d+'+'+r+d;k=
+                 i/w%12>2&&x%u>3&&x%u+i
+                    /w*11-34+('-._'.
+                       index(c=v[
+                         x/u,1]
+                )||c.hex        +3)*99|
+               |0;    k=f     [k/6   ][k%
+                       6];    t=t     +s[
+                      k*j     =k+     j,1
+                 ]end;pr      int     (t+
+                      d+'     ).s     pli
+                       t.j    oin     [0,
+               609    ])#     Y.E.   '+r)
+                ").split        .join)#