From c67fe767221df5dd3465e2d09801816a67cf14f4 Mon Sep 17 00:00:00 2001
From: Dan Howe <d.howe@wrl.unsw.edu.au>
Date: Tue, 17 Apr 2018 12:59:32 +1000
Subject: [PATCH] Update readme

---
 README.md | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index f43a785..c642f9d 100644
--- a/README.md
+++ b/README.md
@@ -1,11 +1,20 @@
 # pdfsearch #
 
-**pdfsearch** finds text strings inside a pdf.
+**pdfsearch** finds text strings inside a pdf. It relies on `pdftotext` from the [Poppler](https://poppler.freedesktop.org/) library.
 
 ## Installation ##
 
+You must install Poppler, and add it to your search path.
+
+**Windows**: http://blog.alivate.com.au/poppler-windows
+
+**Linux**: `sudo apt install poppler-utils`
+
+**Mac**: `brew install poppler`
+
+Then
+
 ```
-pip install PyPDF2
 pip install tqdm
 ```