Merge pull request #4 from cythoplazma/master

Merge request.
Update settings.py
Update settings.py
Update homepage.html
Update download.html
Update download.html
Update download_mac-os-x.html
Update download_source.html
Update download_windows.html
Update download_windows.html
Update download_mac-os-x.html
Update download_source.html
Temporary save.