document pkg-config and GNU make

Conflicts: README

document pkg-config and GNU make
Conflicts: README
a3d0a84b · Sebastian Ramacher · 7a0f870f · a3d0a84b
Commit a3d0a84b authored May 19, 2011 by Sebastian Ramacher
--- a/README
+++ b/README
@@ -8,6 +8,9 @@ Requirements
 gtk2 (>= 2.18.6)
 girara

+Please note that you need to have a working pkg-config installation
+and that the Makefile is only compatible with GNU make.
+
 Installation
 ------------
 To build and install zathura: