make `go` optional

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

README

diff --git a/README b/README
index bc3e905..f34cffa 100644
--- a/README
+++ b/README
@@ -644,6 +644,7 @@
 		CONFIG_CMD_FDOS		* Dos diskette Support
 		CONFIG_CMD_FLASH	  flinfo, erase, protect
 		CONFIG_CMD_FPGA		  FPGA device initialization support
+		CONFIG_CMD_GO		* the 'go' command (exec code)
 		CONFIG_CMD_HWFLOW	* RTS/CTS hw flow control
 		CONFIG_CMD_I2C		* I2C serial bus support
 		CONFIG_CMD_IDE		* IDE harddisk support