Added graph files of topics
Added converter from simulator/pose and simulator/twist ----> /nav_pose_estimated
Adding sublime text file-types to .gitignore
Add .gitattributes, normalize line endings, update tracked files using
.gitignore

- Add .gitattributes file to normalize line ending settings for all users
- Update all files according to .gitattributes
- Update tracked files index according to updated .gitignore
Removing redundant .gitignore files from sub-folders