return empty contents and file strings when the file is already imported, this prevents problems with once importing in combination with globbing (fixes #17)
return empty contents and file strings when the file is already imported, this prevents problems with once importing in combination with globbing (fixes #17)

maoberlehner/node-sass-magic-importer,maoberlehner/node-sass-magic-importer,maoberlehner/node-sass-magic-importer