Customize the apsell command line options

[flozanorht]

The extension works great, thanks a lot, knowing it is very new and hope will improve over time.

My use of the extension is for DocBook files (XML files used for generated printed books and on-line books). The extension flag tag names, attribute names, etc, as mispelled. These are false positives. When I run aspell on the command line I use -c that, with a custom aspell configuration, makes it ignore text XML tag names and attributes, and also tags such as that contain program listings.

I guess that if I could tell the extension to use the same command line arguments it would remove these false positives.