Update README.MD

SecureCRT.SecureFX/9.x/README.MD

@@ -1,3 +1,8 @@
+```
+cat scrt-sfx-9.1.1-2638.osx_x64.dmg.zip.001 scrt-sfx-9.1.1-2638.osx_x64.dmg.zip.002 scrt-sfx-9.1.1-2638.osx_x64.dmg.zip.003 scrt-sfx-9.1.1-2638.osx_x64.dmg.zip.004 > scrt-sfx-9.1.1-2638.osx_x64.dmg.zip
+
+```
+
 # Lic Path
 ```
 ~/Library/Application Support/VanDyke/SecureCRT/SecureCRT_SecureFX.lic