Merge pull request #1 from borillo/master

Update project & rebuild structure
Change comments by variable definitions
Deleted unnecessary test action
Removed constructor argument for the outputFile. Now we generaate several output files
No before/after write is longer needed
Create a separate file for each frame

We will define a anonymous fuction with variables for each metadata
field that we are considering.
Merge pull request #2 from borillo/output_model

Output model
Dumper file is now part of the base code and not of the test directory
Removed useless test for batch print
Extract layout management responsability and asset input management in two new classes