Adds an example of loop

asmsh.h

 asmsh@0x7f6e312e5022 > 
 </pre>
 
+@subsection example_loop Make a loop and use commands
+
+<pre>
+asmsh@0x7f3020bec000 > .regs \%rbx
+rbx: 0000000000000000
+asmsh@0x7f3020bec000 > mov $6, \%rcx
+asmsh@0x7f3020bec005 > add $0xb, \%rbx
+asmsh@0x7f3020bec009 > loop . -4
+asmsh@0x7f3020bec005 > .bytecode loop . -4
+loop . -4 = ( 2 Bytes) e2fa.... ........  ........ ......
+asmsh@0x7f3020bec005 > .breakpoint . + 6
+INFO: Set breakpoint @ 00007F3020BEC00B
+asmsh@0x7f3020bec005 > .run
+INFO: Breakpoint 00007f3020bec00b reached
+asmsh@0x7f3020bec00b > .regs \%rbx
+rbx: 0000000000000042
+</pre>
+
 @section TODO TODOLIST
 
 @todo Implement command for memory read/dump

shell_cmds.c

 		instr = code;
 	}
 
-	ret = snprintf(buf, bufsz, "%s = (%02db) ",
+	ret = snprintf(buf, bufsz, "%s = (%2d Bytes) ",
 			instr, bcode.size);
 	for(int i=0; i<sizeof(bcode.bytes); i++)
 	{