added sorting algorithm templates

algorithms/lib/algorithms/sorting.rb

@@ -1,7 +1,30 @@
 module Algorithms
   class Sorting
     def selection(a, n)
-      puts 'insert code for selection sort here'
+    end
+
+    def bubble
+    end
+
+    def insertion
+    end
+
+    def merge
+    end
+
+    def quick
+    end
+
+    def counting
+    end
+    
+    def radix
+    end
+   
+    def heap
+    end
+    
+    def bucket
     end
   end
 end