.gitignoring eclipse configuration files

I've got tired of "new eclipse plugin: xxx" and "eclipse configuration
update" commits. M2E can generally reconstruct them from pom.xml files.
add README.md

With basic notes about how branches are organized (from now on).
add support to Travis CI
removal of brillevents and brillstats

Both projects were aspect based and demanded too much work for
maintainance. Even its benefits are not without doubts. Perhaps the same
could be accomplished using logging. Better leave them off. If it shows
its value later, they will be rebuilt from scratch.
rebuilding brilltagger and brilltrainer from scratch
Merge commit 'feature/revamp/cleanup' into develop