Instead of things like

```python
def handle_command(self, channel, user, cmd, args):
if len(args) < 1:
self.server.doMessage(channel, user + ": Syntax: %schan [-t|-f] <something>" % self.server.config["comchar"])
return
```

or like

```python
def handle_command(self, channel, user, cmd, args):
if len(args) < 1:
return
```

I would like to have us do things like

```python
def handle_command(self, channel, user, cmd, args):
"""Syntax: chan [-t|-f] <something> # -t short topic | -f full topic"""
...
```

With additional means in place for:
- specifying that a command needs arguments (some don't)
- specifying the comchar somewhere in the message
- spewing the help message for '!help cmd' (always; help plugin already does this I believe) and for '!cmd' (if command needs arguments but they're not given)