Merge pull request #7 from RuthAlk/master

Description is a bit broad, but code looks reasonable. Thanks!
Support receiving shared plain text

This will parse the shared text, and add an item for each line
in that text.

This works very well with (for example) the shopping-list feature
of the MyCookbook app.
I think this also fixes the feature request found here:
http://openintents.uservoice.com/forums/86421-general/suggestions/1294309-oi-shopping-list-sms-email-copypaste-import-expor