diff --git a/README.md b/README.md
index 12a38a4..0211236 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
-This is the github repository of bibtexbrowser.
+Custom changes to bibtexbrowser, including:
 
-It is used to collect patches and extensions as pull requests.
+* Custom index file to select among several bib files
+* Added a pdf link for bib databases exported from Zotero
 
 The official home page of bibtexbrowser is <http://www.monperrus.net/martin/bibtexbrowser/>.
 
diff --git a/bibtexbrowser.php b/bibtexbrowser.php
index e4a1e95..b9bacb1 100755
--- a/bibtexbrowser.php
+++ b/bibtexbrowser.php
@@ -1484,6 +1484,18 @@ class BibEntry {
 
     $str = '';
   
+  
+  #Adding link to PDF file exported by Zotero
+    if ($this->hasField('file')) {
+  
+  $file = $this->getField("file");
+  $file = explode(":", $file);
+    $file = $file[1];
+  
+      $str .= ' <a href="'.$file.'">[PDF file]</a>';
+    }
+  
+  
     if (BIBTEXBROWSER_BIBTEX_LINKS) {
       // we add biburl and title to be able to retrieve this important information
       // using Xpath expressions on the XHTML source
diff --git a/index.php b/index.php
new file mode 100644
index 0000000..b8a3003
--- /dev/null
+++ b/index.php
@@ -0,0 +1,26 @@
+<?php
+#From http://stackoverflow.com/a/15774700
+
+echo "<html>
+<body>
+<h3>Available databases:</h3>";
+echo "<ul>";
+
+$i = 0;
+
+    if ($handle = opendir('.')) {
+        while (false !== ($entry = readdir($handle))) {
+            if (strpos($entry,'.bib')) {
+                echo "<li><a href=\"bibtexbrowser.php?bib=$entry\">$entry</a></li>\n";
+                $i++;
+            }
+        }
+        closedir($handle);
+   }
+if ($i == 0){
+   echo "<p><strong>ERROR: </strong>No .bib files were found</p>";
+}
+echo "</ul>
+</body>
+</html>";
+?>
\ No newline at end of file
