diff -r 02816cd75edc -r 32b9e0a5cebd README
--- a/README	Thu Jun 01 17:29:12 2017 +0200
+++ b/README	Thu Jun 01 17:33:34 2017 +0200
@@ -5,8 +5,8 @@
 Contents:
 1) About ................................................................... 12
 2) Build instructions ...................................................... 24
-3) Usage example ........................................................... 35
-4) License ................................................................. 44
+3) Usage example ........................................................... 39
+4) License ................................................................. 48
 
 
 1) About ______________________________________________________________________
@@ -23,7 +23,11 @@
 
 2) Build instructions _________________________________________________________
 
-In release version you can just
+If you checked out the sources from version control, you firstly need to run
+  ./prebuild.sh
+This requires autotools installed on your system.
+  
+In release version you can skip the first task and just run
   ./configure && make
 
 After building you get a system wide install with