Add tsl2561 code, and test force fill-in light ok

guowenxue

2019-07-31 55f465be474c54edbceb3c6013ae629e0e0323d8

 apue/2.Socket/socket_client.c

@@ -109,7 +109,8 @@
          }
       }

       //printf("Read %d bytes data from server: '%s'\n", rv, buf);

       sleep(5);
    }