README update

Signed-off-by: balaskoa <Jeno.Balasko@ericsson.com>
Change-Id: Ic872817cf41a2762a4875f0869bab3642cf23b20

README.cygwin

@@ -74,6 +74,7 @@ Cygwin setup
     Libs: libncurses-devel
     Libs: libreadline-devel
     Libs: libedit-devel
+    Doc or Text: asciidoc
     
   If, after selecting the required packages and clicking on the 
   "Next" button, a "Resolving Dependcies" window lists further