Screed 1.0 Release Candidate Prep work

Right. So.

 - [ ] write screed release docs
 - [x] install/run versioneer
 - [ ] update relevant docs (known_issues, etc.)
 - [ ] make shiny new packages
 - [ ] do release?
And if there is a new version of versioneer then what?

```
git diff

./setup.py versioneer
git diff
git commit -m -a "new version of versioneer.py"
# or
git checkout -- versioneer.py screed/_version.py screed/__init__.py MANIFEST.in
```