Fixed grammar error ("ran" is past tense of "run")
Opening multiple files makes them all attachments of the same note.

Now when indicator.py is passed multiple positional command line
arguments, they are all added as attachements to one note rather than
argument parsing problems happening.

The desktop file has been edited (1 character change!) so that when
multiple items are selected in Nautilus (or whatever file manager)
they are passed as a list of positional arguments to everpad
(indicator.py). Combined with the previous change, this means that
selecting multiple objects in the file manager and opening them
with everpad (using the menu shortcut) creates a new note with those
attached. The old behavior was to create a new note for each object
with that object attached. That seems like less useful behavior in
general.

Added docstring to ResourceEdit.add_attach

Added new method to ResourceEdit.add_all_attach for adding a list of
attachments at once.

Made the EverpadService.create_wit_attach method take a list of
strings to match the new signature of Indicator.create

(Note: create_wit_attach looks like it should read create_with_attach
- but this is a public service name, so I wasn't sure that it was a
good idea to change it unilaterally.)

Improved English in "--replace" argument description
Merge pull request #256 from RadixSeven/multi-attach

Multi attach