Revises with updated SHP path and conform object

This commit revises the SHP dataset name with that found on the previously listed FTP site, and adds a `conform` object. The commit appears to be passing tests from [Travis CI][1].

The updated `us-wa-chelan.json` file has been tested using @sbma44's `openaddress-conform` [branch][2] and appeared to produce a correctly formatted `out.csv` file.

[1]: https://travis-ci.org/mattmakesmaps/openaddresses
[2]: https://github.com/sbma44/openaddresses-conform/tree/xml