Updated first note in sys requirements section; deleted references to Python 2.6 that were overlooked.
Merge pull request #1490 from pziegfeld/note_update

Updated first note in sys requirements section; deleted references to Python 2.6.
fix for 2d slices in applyJ&T
Merge pull request #1491 from Kenneth-T-Moore/slice

fix for 2d slices in applyJ&T
Pickleable CSVCaseRecorder
Deleted ref to Python 2.6.5 that I somehow overlooked.
Merge pull request #1492 from setowns1/bug

Pickleable CSVCaseRecorder
Merge pull request #1493 from pziegfeld/mac_note

Deleted ref to Python 2.6.5 that I somehow overlooked yesterday.