Packages without categories fail to POST

[fauxserve]

Hey! Great tool, much appreciated.
I encountered an error where your expected behavior to strip out the " < category > " tag failed to occur, so the POST command had an invalid data point:
Example: " < category > No category assigned </ category > "

We were able to manually strip that out and POST by hand, but I figured I should pass along the error.

Thank you so much for contributing to the community!