[BUGFIX] Removing travis 5.5
Merge pull request #352 from hmspl/travis_55

[BUGFIX] Removing travis 5.5
[DOC] Document on how to change a commit message
[DOC] Document Refreshing a fork via pull-rebasing
Merge pull request #347 from cedricziel/rebaseDocs

[DOC] Document on how to change a commit message