[Feature Request] Structure .driverc

```
[global]
key1=value1
key2=value21

[command_1] # such as pull
key3=value31,value32
key4
key5=value51

[command_2] # such as share
key3=value33
key2=value22
key6=value61,value62,value63
...
```

where the global keys apply until the same keys (options) are overridden by more specific values in [command_n] sections.

Then it's much easier to perform some repetitive commands.
