benchmark.csv: adding a benchmark for csv.

extra/benchmark/csv/csv.factor

@@ -0,0 +1,10 @@
+! Copyright (C) 2012 John Benediktsson
+! See http://factorcode.org/license.txt for BSD license.
+USING: arrays csv kernel math.parser sequences ;
+IN: benchmark.csv
+
+: csv-benchmark ( -- )
+    1,000 200 iota [ number>string ] map <array>
+    [ csv>string string>csv ] keep assert= ;
+
+MAIN: csv-benchmark