added initial version of SkyView package, still WIP
removed unused import
SkyView: initial working version

downloading of FITS files possible using the `download` method
(only supported parameters are the required ones so far,
coordinates/name and survey)
added docstring to SkyView._submit_form
Merge branch 'master' of github.com:astropy/astroquery into skyview
[SkyView] started to support optional parameters. Still WIP!
SkyView: support optional parameters
SkyView: support multiple surveys in one query
added docstring to SkyView.download
SkyView: fixed `gridlabels` parameter usage
Merge branch 'master' of https://github.com/astropy/astroquery into skyview
Merge branch 'master' of https://github.com/astropy/astroquery into skyview
renamed SkyView.download -> SkyView.get_images
added method SkyView.get_image_list
added remote test for SkyView.get_image_list
fix position of SkyView.get_image_list
fixed syntax error in SkyView test file
Merge branch 'master' of github.com:astropy/astroquery into skyview
Added `remote_data` wrapper to remote SkyView test
splitted the method SkyViewClass.get_images up into the two methods
`get_images_async` and `get_images`.

`get_images` calls `get_images_async` which loads file handlers lazily.