gkellogg/json-ld — pull request #6 by palexander (2013-02-27 00:32:13+00:00)
Title: Check to see if local file exists before opening

The `RDF::Util::File.open_file` method was throwing an exception when the local file did not exist. This modification will check to see if it exists, avoiding the exception and allowing open-uri to download the file.

I'm also getting errors when running the specs. Many of them look like formatting problems, EX:

```
40) JSON::LD test suite toRdf toRdf-0026-in.jsonld: Test creation of multiple types
Failure/Error: quads.sort.join("").should produce(sorted_expected, t.debug)
Expected: _:b0 .
_:b0 .

Actual : _:t0 .
_:t0 .
```