updated version number and default import

Now default import includes system_info as well as test
fix astropy Quantity error in draw_limb see astropy/#1881
Merge pull request #717 from Cadair/master

fix astropy Quantity error in draw_limb see astropy/#1881
More api doc work, added instr and io
add io and fix gitignore
lightcurve, roi and spectra api docs
remake the rst files that git clean just murdered
tweak spectra
finish api doc, only warnings to crush
remote __init__ module list
add more files
Re-merge install doc changes

I had to rebuild my branch due to some rebase crazy.
Merge pull request #722 from Cadair/doc_sprint_2

Finish API docs
Fixed NDData dep, however found a bug in astropy.

This commit relies upon astropy PR #1650
Fix MapMeta to allow it to be deepcopied.

This is now working after the merge of astropy #1686
bump astropy dep to 0.3.0 final
add extra numpy extractions to GenericMap
Merge pull request #634 from Cadair/issue_607

Make Map inherit from NDData
make glymur optional dependancy
fixed conflict