slightly easier way to install update sites...

Not sure if this is a 3.6 thing or not but its a little easier to install new software in 3.6 via the Help -> Install New Software menu. You then click Add to add the update site and you're almost done.

e.g. thats how Sonatype describe installing m2elicpse. (We could just link to their docs
http://m2eclipse.sonatype.org/installing-m2eclipse.html