Point out that the main definition file must be ino or cpp, not both
Point out that the main definition file must be ino or cpp, not both

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