Convert hyphen to en dash in badge title text

[roryokane]

An en dash ‘–’ (or an em dash ‘—’) is more typographically correct than a hyphen ‘-’ when used to set off another phrase. It will make the text a tiny bit easier to read.

Here’s an example of the change. Before:

Project Status: Concept - Minimal or no implementation has been done yet.

After:

Project Status: Concept – Minimal or no implementation has been done yet.

You can make this update along with the “WIP” update, so you don’t have to generate the badges twice.

I also converted the hyphens in some other text: the explanations of the badges in gh_pages/index.md, and the beginning of gh_pages/history.md.

This commit does not include generating new folders in badges/ and gh_pages/badges/ by running the fabfile. It does, however, update the following files with the markup that would be generated, so you don’t have to remember to update them yourself:

• the badge at the top of README.md
• the What It Looks Like section of gh_pages/index.md
• gh_pages/fabfile.py

[jantman]

@roryokane Somehow this slipped through the cracks, and I forgot about it until now. It's really not acceptable to leave a PR open this long, I'm sorry.

I'm going to have to check that this won't clash with the automatically-generated docs, but I plan on doing some more work on this project over the next few days, and should be able to get this merged.

-Jason

[jantman]

I did some fix-ups and merged this as https://github.com/jantman/repostatus.org/pull/17