refactor.

README.md

@@ -117,7 +117,7 @@ The 'stdout_logfile' value is the log file. All parent directories must already
 ### Converting documents
 ```bash
 # LibreOffice
-apt-get install python-software-properties
+apt-get install software-properties-common
 apt-add-repository ppa:libreoffice/ppa
 apt-get update
 apt-get install libreoffice

app/SearchDisplace/SearchAndDisplaceXML.php

@@ -31,7 +31,6 @@ class SearchAndDisplaceXML
     {
         $dom = new \DOMDocument();
         $dom->load($this->file);
-        $replacements = [];
 
         foreach($dom->getElementsByTagName('p') as $p) {
             $is_image = false;