Changed to use ros frame synchronization
Forgot to add dependencies on exported headers
Added new compression mechanism that should be more stable
New compression and decompression scheme
Done
Continuous recording files now saved in timestamped folder, fixed bug in online_compressor
Cleaned up and commented all the new files
Merge pull request #33 from nilsbore/master

This changes the association of frames to use the ros approximate time class. Merging in preparation for new pull