upgrade README

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
bump to version '0.2.10'

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
Update Gemfile.lock accordingly

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
update Changelog

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
Merge branch 'release/0.2.10' into devel

* release/0.2.10:
  update Changelog
  Update Gemfile.lock accordingly
  bump to version '0.2.10'