added rpm-build to requirements

At least under Fedora 20, we need the rpm-build package
to provide /usr/bin/rpmspec, otherwise the build fails (silently).

diff --git a/README.md b/README.md
index e16610c747971cdf8f88c39120d8f9eaa9cbaa15..03eff3a22075c594cbc9932c26feb92997f00aa6 100644 (file)
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@ Optionally you can install python-pygame if you want to play a modem sound while
 
 ### Red Hat, Fedora, CentOS, etc.
 
-    sudo yum install python-psutil python-twisted wmctrl gnupg fakeroot
+    sudo yum install python-psutil python-twisted wmctrl gnupg fakeroot rpm-build
     ./build_rpm.sh
     sudo yum install dist/torbrowser-launcher-*.rpm