Check for requirements.json without trying to read it

[atroche]

requirements_json was throwing an exception when the file wasn't there.

[danielbreves]

👍

[liulikun]

👍

[svizzari]

Should the read_json method be able to handle that? Do we need to raise an Exception elsewhere?

[atroche]

read_json will have to throw an exception if it can't find the file — it'd be really ugly to return nil. And I think a “file not found” exception is descriptive enough to let people know what's going on.

[svizzari]

@atroche Makes sense