Enable HTTP redirects.
Implementation of binary downloads.
binary downloads
Squashed commit of the following:

commit b7a8027cc33964039e4d8110f056ccf409379582
Author: Thomas Mayer <thomas@residuum.org>
Date:   Sat Jul 27 15:46:59 2013 +0200

    Further implementation of #22

    - changed [folder( to [write( for consistence
    - do not set download folder, but file path

commit bacfd6d68dc70660fca06aca712950cb922b110f
Author: Thomas Mayer <thomas@residuum.org>
Date:   Thu Jul 18 01:59:41 2013 +0200

    Further implementation of issue #22:

    - setting folder
    - creating folder recursively if possible
    - writing file with name "1" to folder

commit 9e3949cb3e5da0e0c0af1e7a68f7ba1792101afe
Author: Thomas Mayer <thomas@residuum.org>
Date:   Tue Jul 16 00:03:33 2013 +0200

    Begin implementing issue #22:

    - setting and clearing download folder possible
    - example for downloading data to file

commit c9c4499dcca62eac2a4e09da9ccb8edde0ba3fe3
Author: Thomas Mayer <thomas@residuum.org>
Date:   Mon Jul 15 23:45:12 2013 +0200

    Begin implementing issue #22:

    - setting and clearing download folder possible
Downloading explained in help file.
removed unnecessary includes.
When downloading to file, do not output data on left outlet.
Merge branch 'master' into json-c-0.11

- downloading to file
- enable HTTP redirects