Export references from Endnote in ``Endnote Export'' format

Endnote has no built-in mechanism to generate Labels, so we'll use an easily parsed plain text version of the library.

1. Open the Endnote library containing your references.
2. Select all refs.
3. Select Edit [IMAGE png] Output Styles [IMAGE png] Open Style Manager and set style to ``EndNote Export''.
4. Export refs to a text file by selecting File [IMAGE png] Export... (make sure ``Text Only'' is chosen under ``Save file as type'')
5. Close the Endnote library.