Add Readline option to README files

INSTALL

@@ -251,6 +251,7 @@ enabled with options beginning with '--with-'.  At this time these options
 are:
 
   --with-xml-support      build rigmem with XML support [default=no]
+  --without-readline      disable readline in rigctl/rotctl [default=yes]
   --without-cxx-binding   do not build C++ binding and demo [default=yes]
   --with-perl-binding     build perl binding and demo [default=no]
   --with-perl-inc         directory containing perl includes

README.betatester

@@ -1,6 +1,6 @@
 Hamlib - (C) Frank Singleton 2000 (vk3fcs@ix.netcom.com)
          (C) Stephane Fillod 2000-2011
-         (C) The Hamlib Group 2000-2012
+         (C) The Hamlib Group 2000-2013
 
 Why does Hamlib need beta-testers?
 ==================================
@@ -86,6 +86,7 @@ Optional, but highly recommended for a complete build:
 * libxml2 devel                     # xml2-config --version
 * libgd2 devel                      # gdlib-config --version
 * libusb devel                      # libusb-config --version (not 1.0.0!)
+* libreadline devel                 # ver 5.2 or newer
 * Git for connection to hamlib.git.sourceforge.net
 
 N.B  The libusb package is required for building most of the 'kit' backend.
@@ -315,4 +316,3 @@ Needless to say, patches are also very welcome (see README.developer).  :-)
 
 
 Stephane - F8CFE and The Hamlib Group
-

README.developer

@@ -252,6 +252,7 @@ Optional, but highly recommended:
 * libxml2 devel                     # xml2-config --version
 * libgd2 devel                      # gdlib-config --version
 * libusb devel                      # libusb-config --version (not 1.0.0!)
+* libreadline devel                 # ver 5.2 or newer
 
 N.B.:  The libusb package is required for building most of the 'kit' backend.
 The older version is needed, not 1.0.0 or higher.  Debian and derivatives