added lightcurve tutorial notebook, removing the output and commits thereof.
changed section name in metadata.
Merge pull request #11 from aringlis/master

Added a lightcurve tutorial for the gallery - v2
added section_name requirements
Merge pull request #5 from ehsteve/master

Added SunPy overview notebook first presented at 13th RHESSI workshop
Change everything to new section headings.
Merge remote-tracking branch 'upstream/master'
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