Update metadata

[jcfr]

See

SlicerAstro/CMakeLists.txt

Lines 5 to 14 in 2817670

	#-----------------------------------------------------------------------------
	# Extension meta-information
	set(EXTENSION_HOMEPAGE "http://www.example.com/Slicer/Extensions/SlicerAstro")
	set(EXTENSION_CATEGORY "Astronomy")
	set(EXTENSION_CONTRIBUTORS "Davide Punzo (Kapteyn Astronomical Institute)")
	set(EXTENSION_DESCRIPTION "Extension for enabling Astronomical visualization in Slicer")
	set(EXTENSION_ICONURL "http://www.example.com/Slicer/Extensions/SlicerAstro.png")
	set(EXTENSION_SCREENSHOTURLS "http://www.example.com/Slicer/Extensions/SlicerAstro/Screenshots/1.png")
	set(EXTENSION_DEPENDS "NA") # Specified as a space separated list or 'NA' if any
	set(EXTENSION_BUILD_SUBDIRECTORY inner-build)

[Punzo]

thanks done!