added blog entry for presentation at rhessi workshop
added blog entry for presentation at rhessi workshop

ehsteve/sunpy.github.io,dpshelio/sunpy.github.io,ehsteve/sunpy.github.io,dpshelio/sunpy.github.io,souravc4/sunpy.github.io,souravc4/sunpy.github.io,ehsteve/sunpy.github.io,souravc4/sunpy.github.io,dpshelio/sunpy.github.io