Add Debian package dependencies for Pillow.
diff --git a/GettingStarted.wiki b/GettingStarted.wiki
index ea620a5..9a58d85 100644
--- a/GettingStarted.wiki
+++ b/GettingStarted.wiki
@@ -33,6 +33,9 @@
  * python-dev
  * python-lxml
  * virtualenv (version 1.10 or later)
+ * libpng12-dev
+ * libjpeg-dev
+ * libwebp-dev
  * xvfb
  * zlib1g-dev
  * firefox or iceweasel
@@ -41,7 +44,7 @@
 
 This might work for you:
 {{{
-sudo apt-get install libxml2-dev libxslt-dev python-dev python-lxml python-virtualenv xvfb zlib1g-dev firefox make
+sudo apt-get install libxml2-dev libxslt-dev python-dev python-lxml python-virtualenv xvfb zlib1g-dev firefox make libpng12-dev libwebp-dev libjpeg-dev
 }}}
 
 == Setting up ==