fix index crawl channels for tile_index_crawl.py
fix index crawl channels for tile_index_crawl.py

Squashed commit of the following:

commit b1023ea05e7e9e93c923b49b2c9d0376a316805b
Merge: 381b22f 4dbd802
Author: Olivier Yiptong <olivier@olivieryiptong.com>
Date:   Thu May 21 11:15:21 2015 -0400

    Merge branch 'master' into pr/7

commit 381b22f8953dbe6efd9e3aed4633460401b57c5f
Author: Daniel Thornton <daniel@relud.com>
Date:   Mon May 18 15:20:11 2015 -0700

    fix index crawl channels

Closes #7

rlr/splice,mostlygeek/splice,mostlygeek/splice,mozilla/splice,ncloudioj/splice,mostlygeek/splice,tkiethanom/splice,tkiethanom/splice,ncloudioj/splice,ncloudioj/splice,oyiptong/splice,mozilla/splice,mozilla/splice,tkiethanom/splice,rlr/splice,mozilla/splice,rlr/splice,mostlygeek/splice,oyiptong/splice,oyiptong/splice,rlr/splice,tkiethanom/splice,oyiptong/splice,ncloudioj/splice