finalize the test_copy in test_spectrum.py
Extra codes on tests
Merge branch 'master' of https://github.com/odarbelaeze/spectraplotpy
Adding the base exporter classes.
Adding sample data files.
finalized test_add and test_add_value in test_spectrum.py
added correction to spectrum.py
Merge pull request #7 from BroHOkee/master

Extra codes on tests to validate data
Merge branch 'master' of https://github.com/odarbelaeze/spectraplotpy
Merge pull request #8 from ariamania/master

finalized test_add and test_add_value in the test_spectrum.py
Improved documentation.
General functions moved outside of the class.
finalized the test_sub and test_sub_value in the test_spectrum.py
Merge remote-tracking branch 'oscar'

Conflicts:
	spectraplotpy/importer.py
Dataset tests and lint.
Improved test..
Merge branch 'master' of https://github.com/odarbelaeze/spectraplotpy
added the __rmul__()  in the spectrum.py
Improved tests.
finalized test_mul() and test_mul_value() in test_spectrum.py
Merge branch 'master' of git://github.com/lidiabressan/spectraplotpy into lidiabressan-master