It makes protocols methods public

When running this module, it gets my protocols and make those methods public, that's wrong, because protocol methods can't be public, the protocol are public.

Example:
```swift
protocol Foo {
   func foo()
}
```

Need to be:
```swift
public protocol Foo {
   func foo()
}
```

Not:
```swift
public protocol Foo {
   public func foo() <- this causes a compiler error
}
```
