Simply drag and drop the 'chatConversationStore.plist' file into Spoopy and it will parse the data into a treeview. It will then attempt to use it's known schemas to place that data into a tableview (giving you the opportunity to intervene if the schema is not recognized).
Once the data is in the table, select/deselect, search and date filter the results as well as utilizing Google Translate to automatically translate the message content.
Finally, create a HTML report from your selections which actually looks like a SnapChat conversation.
Note that media decryption is not even attempted at this time.
This software is still in development and more features may be added soon.
Check out the blog post related to the software for information on how the file is parsed.