imprmented mock test for plot() and y_error_plot() in test_spectrum.py
Merge branch 'master' of https://github.com/odarbelaeze/spectraplotpy
Merge branch 'master' of https://github.com/odarbelaeze/spectraplotpy
Merge branch 'master' of https://github.com/odarbelaeze/spectraplotpy
finalized the mock test for plot() and errordata() in test_spectrum.py
Merge branch 'master' of https://github.com/odarbelaeze/spectraplotpy
Merge pull request #17 from ariamania/master

implemented mock tests for plot() and y_error_plot() in test_spectrum.py