updated CPR recommendations

[jenk]

The new recommendations from the American Heart Association & American Red Cross are to

• Alternate 30 compressions with 2 quick mouth-to-mouth breaths.
• Push hard & fast, minimizing interruptions to chest compressions.

Sources:

• CPR Procedure summary (PDF) provided by the Seattle Times.
• News story with info on classes at: http://seattletimes.nwsource.com/html/health/2002718532_healthcpr04.html