TDS Cleanup and Support for Facets of 'custom' clauses

### Team Development for Sitecore (TDS) Usage

* I've removed files that shouldn't be in source control (`BuildFiles_*.txt`)
* I've added a .gitignore to prevent the files from being re-added
* I've added a .gitattributes to control line endings of `.item` files
* I've fixed the path to MSBuild targets file for TDS. It was modified to point to a location that is no longer available (fc2d72f1305e5136f09ea9e3a2e93a2cdffd46b8). 

### Changes for Facets
* [Use `Display Name` rather than `Name`](https://github.com/seankearney/Sitecore-Item-Buckets/commit/16a1a463f92e9d919f60d01892f868b2b05119bc#L1R105)
* [Prevent a straight '*' search](https://github.com/seankearney/Sitecore-Item-Buckets/commit/16a1a463f92e9d919f60d01892f868b2b05119bc#L1R392)
* [Wire up the `Parameters` field on the facet items to set properties via reflection](https://github.com/seankearney/Sitecore-Item-Buckets/commit/16a1a463f92e9d919f60d01892f868b2b05119bc#L1R422)
* [Added a `Title` property to `FacetReturn` for more control over the facet's title -- set via the `Parameters` field of the facet](https://github.com/seankearney/Sitecore-Item-Buckets/commit/16a1a463f92e9d919f60d01892f868b2b05119bc#L2R5)
* [Added support for facets to use the `custom` syntax](https://github.com/seankearney/Sitecore-Item-Buckets/commit/16a1a463f92e9d919f60d01892f868b2b05119bc#L0R994)