2/14/2019 - updates

• Updated link from "http://nodis3.gsfc.nasa.gov/displayDir.cfm?t=NPRc=8000s=4A  " to "https://nodis3.gsfc.nasa.gov/displayDir.cfm?t=NPR&c=8000&s=4B "
• Updated Citation to fix doc number from "A" to "B" year from 2008 to 2017
• Added effective and expiration dates to Citation