Clean up & add yes utility

factor.nim

@@ -0,0 +1,11 @@
+import cligen
+import common
+
+proc factor(num:int):seq[int] =
+    result = @[0]
+
+proc main(integers:seq[int]) =
+    for number in integers:
+        echo number, ": ", factor(number)
+
+dispatch(main)