If you want to include a new version of a plugin or a new plugin in the collection, checkout the gh-pages branch and modify the pluginlist.xml file.
git clone git@github.com:AMIGA-IAA/TavernaAstronomyPluginCollection.git
git checkout -b gh-pages origin/gh-pages
...
This work is supported by VAMDC, Wf4ever and Paris-Meudon Observatory.