Can someone please review the pull request to Network.rb?

[kojix 2]

Hello. SciRuby.

I'm kojix2, and I've been working on some minor fixes for IRuby.

There was requests to try networkx.rb in the Japanese competitive programming community, and several pull requests were created, but they don't seem to have been reviewed at all, so I forked Network.rb to sciruby-jp. I have to admit that I do not know much about Networkx myself. However, I am writing here to bring the voice of the local Ruby community in Japan to the SciRuby forum on Earth. 

https://github.com/sciruby-jp/networkx.rb

However, the sciruby-jp team is currently not in use, and the fork is simply being used as a refuge. As a matter of fact, I don't want to fork it.

If there is no active maintainer, please consider assinging a new maintainer or opening the commit rights to an outsiders.

There are people who are interested in Networkx.rb.

I want the current state and future of SciRuby to be better.

Best regards