Add ability to write OPS/SEC from cbc-pillowfight to a file
Add ability to write OPS/SEC from cbc-pillowfight to a file

  cbc-pillowfight 2> /tmp/stats.txt

or, when writing to terminal required

  cbc-pillowfight 2>&1 | tee /tmp/stats.txt

Change-Id: I166d45443fcedd6623a38176d90943c3af5b882a
Reviewed-on: http://review.couchbase.org/91830
Reviewed-by: Tim Bradgate <f1a26ee65f021cb7d82b83dfb09abf144d3eb64f@couchbase.com>
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>

couchbase/libcouchbase,kojiromike/libcouchbase,avsej/libcouchbase,kojiromike/libcouchbase,avsej/libcouchbase,couchbase/libcouchbase,avsej/libcouchbase,couchbase/libcouchbase,kojiromike/libcouchbase,kojiromike/libcouchbase,avsej/libcouchbase,couchbase/libcouchbase,couchbase/libcouchbase,couchbase/libcouchbase,avsej/libcouchbase,avsej/libcouchbase,couchbase/libcouchbase,avsej/libcouchbase