add bash function close
add bash function close

vbelfoure/uber-library-example,fepblaster/relay,pinkman1492/RF24,mawildoer/encoder,pinkman1492/RF24,dmautomac/MOD_TCP,alex254/ethernet,spark/uber-library-example,mumblepins/relay-lib,luckygodswill/Photon,fepblaster/Photon_Relay,dmautomac/MOD_TCP,dcabanis/vl6180x_lib,vbelfoure/uber-library-example,spark/uber-library-example,alex254/ethernet,luckygodswill/Photon,blakejakopovic/firmata-spark