Modified spectrum.py and updated quickstart.rst
Merge branch 'master' of https://github.com/odarbelaeze/spectraplotpy
seting up the presentation example
Merge pull request #25 from BroHOkee/master

Updated quickstart.py and spectrum.py
Merge pull request #26 from lidiabressan/master

setting up continuous integration.
Adding the documentation.
Merge branch 'master' of github.com:odarbelaeze/spectraplotpy
Finishing continuous integration.
Adding the licence and notice.
Merge pull request #27 from ariamania/master

seting up the presentation example
importer and test improved
improved test of dataset class