Add a note about running Eclipse instances to RELEASES.md
Add a note about running Eclipse instances to RELEASES.md

This commit is dedicated to Stephan Preibisch.

Signed-off-by: Johannes Schindelin <53fb8db7833fca1e1746dd8592f61048d350f64c@gmx.de>

TehSAUCE/imagej,biovoxxel/imagej,biovoxxel/imagej,TehSAUCE/imagej,TehSAUCE/imagej,biovoxxel/imagej