Update notes for submitted changes

*     Initial checkin for contrail storage stats daemon     1. added unit tests     2. renamed/restructured SConscript files     3. restructured setup.py     4. added stats-daemon.conf     5. added test packages in SConscript     6. modified storage_nodemgr.py based on review comments     7. added latency changes     8. added diff logic for read/write bytes/counts for gui     9. added --conf_file option during daemon init     10. removed storage_nodemgr.py install in /usr/bin     11. added contrail-storage-stats console script path in         storage stats upstart     12. removed /usr/bin/python from upstart file since it         was not needed