Feature request: Per project configuration

[daniels]

While restish works great for personal use, it would be even better if you could easily share an API configuration in a project. The use case is api-specific commands in scripts, improving readability. That would require a way for restish to automatically pick up local configuration files, or to specify a file on the command line.

It seems like relative paths to spec_files already works, so hopefully this would play nicely with this feature.