ENH: integrate_in_range out of place
DOC: some docs
Merge branch 'master' into ENH_Integrat_in_range_out_place
BUGFIX: right dimension for result
Automatic style corrections courtesy of autopep8
Merge branch 'master' of https://github.com/hyperspy/hyperspy into ENH_Integrat_in_range_out_place

Conflicts:
	hyperspy/signal.py
BUGFIX: for single spectrum
Merge pull request #206 from pburdet/ENH_Integrat_in_range_out_place

Enh integrate in range out place