Improve instructions to add the update site.
This account is mainly used to facilitate the distribution of Macros and Plugins for our users. Feel free to use this repository as you like.
To add the repository to your list of FiJi update sites, use this
* [http://sites.imagej.net/UniBas-IMCF/ http://sites.imagej.net/UniBas-IMCF/]
== Macros and Plugins in the IMCF repository ==