I just uploaded a .install file for testing (vagalume) and it contained the original:

[install]
catalogues = extras
package = vagalume

[extras]
name = Maemo Extras
uri = http://repository.maemo.org/extras/
dist = fremantle
components = free non-free


As on your site my computer is asking me to open it with my mobile, my webserver just want to save is as a text file.

Thank you for your help!