Report the coverage in the travis-terminal
Remove useless file
Add function to extract decays from pdg-ascii-file

Start to implement the function to extract decays from the
pdg-ascii-file and write them systematically in a new file. It now works
for D*(2010)+- but there is still a lot of work to be done.
Also changed the function name extract_decays to
extract_decays_from_decays
This may break the tests, I will fix it in a later commit
also, open_file_safely() should be moved to a utility.py module
Move open_file_safely to new module utility

the previous commit created some circular includes which are now
resolved and the open_file_safely function in now in a utility module
which is the right place for it.
Also there are no more failing tests
Merge branch 'master' of https://micgro42@github.com/micgro42/SaneDecayRescaling.git