add support for command-line usage

bibtexbrowser-cli.php

@@ -0,0 +1,10 @@
+<?php
+// a command line interface for bibtexbrowser
+// example: php bibtexbrowser-cli.php test_cli.bib --id classical --set-title "a new title"
+$_GET['library']=1;
+function createBibEntry() { $x = new RawBibEntry(); return $x;}
+require('bibtexbrowser.php');
+bibtexbrowser_configure('BIBTEXBROWSER_BIBTEX_VIEW','reconstructed');
+bibtexbrowser_configure('BIBTEXBROWSER_BIBTEX_VIEW_FILTEREDOUT','');
+bibtexbrowser_cli($argv);
+?>