Jake Champlin e0556cf9e8 Add DefaultValue text for flags ...

Allows a user to override the default value of a flag in the displayed help output.

Ex:
```
cli.IntFlag{
	Name: "foo, f",
	DefaultText: "random foo",
	Value: "bar",
}
```

Running `(app.name) -h` will now yield:

```
--foo value     (default: "random foo")
```

Fixes: #504

2016-08-28 03:14:39 -04:00

7.3 KiB

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