I'm glad you two are okay. I guess earthquakes might behave in ways and places not expected, so even though I live in a place that has not been hit by large quakes in recorded history, I asked a couple of acquintances who were present in Nepal when the 7.8 quake hit in April about all the quaky details, which people in earthquake prone places know all about.
One of them told me about the precautions one can take including the "duck-cover-hold" routine. About that and more there are advices on this page from Iceland: http://www.almannavarnir.is/displayer.asp?cat_id=140 They do not write about the hazard that gas can pose, because they don't use that much in Iceland, so one has to read it with consideration for local circumstances.