/*
Package grab provides a HTTP download manager implementation.

Get is the most simple way to download a file:

	resp, err := grab.Get("/tmp", "http://example.com/example.zip")
	// ...

Get will download the given URL and save it to the given destination directory.
The destination filename will be determined automatically by grab using
Content-Disposition headers returned by the remote server, or by inspecting the
requested URL path.

An empty destination string or "." means the transfer will be stored in the
current working directory.

If a destination file already exists, grab will assume it is a complete or
partially complete download of the requested file. If the remote server supports
resuming interrupted downloads, grab will resume downloading from the end of the
partial file. If the server does not support resumed downloads, the file will be
retransferred in its entirety. If the file is already complete, grab will return
successfully.

For control over the HTTP client, destination path, auto-resume, checksum
validation and other settings, create a Client:

	client := grab.NewClient()
	client.HTTPClient.Transport.DisableCompression = true

	req, err := grab.NewRequest("/tmp", "http://example.com/example.zip")
	// ...
	req.NoResume = true
	req.HTTPRequest.Header.Set("Authorization", "Basic YWxhZGRpbjpvcGVuc2VzYW1l")

	resp := client.Do(req)
	// ...

You can monitor the progress of downloads while they are transferring:

	client := grab.NewClient()
	req, err := grab.NewRequest("", "http://example.com/example.zip")
	// ...
	resp := client.Do(req)

	t := time.NewTicker(time.Second)
	defer t.Stop()

	for {
		select {
		case <-t.C:
			fmt.Printf("%.02f%% complete\n", resp.Progress())

		case <-resp.Done:
			if err := resp.Err(); err != nil {
				// ...
			}

			// ...
			return
		}
	}
*/
package grab