Add link guide of how to cryptographically sign your RubyGem

[bf4]

Per discussion on rubygems-developers

[bf4]

sorry about the whitespace...

[drbrain]

Thanks! I fixed the whitespace, too. No big deal.

If you'd like, feel free to submit a new page with the contents of your blog.

[bf4]

(Sorry for the whitespace, doing this from the github gui).

@drbrain gladly. A whole new page? Sure. Anything special to do re: adding to the index of pages, specifying order, cross-linking, etc.? Should it be called "security" and replace http://guides.rubygems.org/publishing/#gem_security (with a link)

Should I add a link from the command reference as well? And add links from http://guides.rubygems.org/specification-reference/#cert_chain and I thought I saw a link to docs somewhere

[drbrain]

A whole new page covering and named Security sounds great.

The only required links are to update the index and preceding and following pages. Add whatever other links you feel appropriate. As mentioned in #67, you'll need to make changes to specification-reference.md in rubygems/rubygems. This is also true of command-reference.md.

If you include your tutorial, be sure to link back to your original article.