first edit on HEK
finished first draft of HEK section
add pdf conversions of eps figures
add stuff to dataypes
added url for paper
Updates to the spectra section, now with a sunpy example
example added to the helio section and some re-writting
some formating fixed
more changes
VSO section added
fix typo in python code for vso
Fix corrections suggested by @derdon
Merge pull request #22 from ehsteve/master

My Contributions
Merge pull request #23 from dpshelio/spectra

Spectra section
Merge pull request #24 from dpshelio/helio

Helio section
Merge pull request #25 from dpshelio/vso

VSO section
Merge pull request #20 from wafels/master

HEK section, first draft
Merge pull request #21 from Cadair/master

Datatypes and other tweaks
bibliography formating and updates
fix astropy ref