Update Changelog-1.9.12.rst
Update Changelog-1.9.12.rst
Update Ruby.rst
Fix broken url and broken command

See issue https://github.com/unbit/uwsgi-docs/issues/74
Merge pull request #75 from grillermo/master

uwsgi to django tut fixes
Update Changelog-1.9.12.rst
Based on IRC conversation, add a little admonition about the terrors of no-site