Merge pull request #75 from Jailander/hydro-devel

adding topological map publisher and adapting localisation node
moving strands_navigation_msgs to strands_navigation
Merge pull request #81 from BFALacerda/hydro-devel

moving strands_navigation_msgs to strands_navigation
Update README.md
Merge pull request #82 from Jailander/patch-1

Update README.md
Adding Missing TopologicalMap.msg and changing maintainer emails, names and Licences for Packages