Darwin: added print_instructions to darwin build script

scripts/eosio_build_darwin.sh

@@ -315,3 +315,11 @@
 	else
 		printf "\tWASM found at /usr/local/wasm/bin/\n"
 	fi
+
+	function print_instructions()
+	{
+		printf "\n\t$( which mongod ) -f ${MONGOD_CONF} &\n"
+		printf '\texport PATH=${HOME}/opt/mongodb/bin:$PATH\n'
+		printf "\tcd ${HOME}/eos/build; make test\n\n"
+	return 0
+	}
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