docs: update the version number for the upcoming release

Signed-off-by: Benno Schulenberg <bensberg@justemail.net>

doc/man/nano.1

@@ -17,7 +17,7 @@
 .\"   Documentation License along with this program.  If not, see
 .\"   <http://www.gnu.org/licenses/>.
 .\"
-.TH NANO 1 "version 2.5.3" "February 2016"
+.TH NANO 1 "version 2.6.0" "June 2016"
 .\" Please adjust this date whenever revising the manpage.
 .\"
 

doc/man/nanorc.5

@@ -17,7 +17,7 @@
 .\"   Documentation License along with this program.  If not, see
 .\"   <http://www.gnu.org/licenses/>.
 .\"
-.TH NANORC 5 "version 2.5.3" "February 2016"
+.TH NANORC 5 "version 2.6.0" "June 2016"
 .\" Please adjust this date whenever revising the manpage.
 .\"
 .SH NAME

doc/man/rnano.1

@@ -16,7 +16,7 @@
 .\"   Documentation License along with this program.  If not, see
 .\"   <http://www.gnu.org/licenses/>.
 .\"
-.TH RNANO 1 "version 2.5.3" "February 2016"
+.TH RNANO 1 "version 2.6.0" "June 2016"
 .\" Please adjust this date whenever revising the manpage.
 .\"
 .SH NAME

doc/texinfo/nano.texi

@@ -5,9 +5,9 @@
 @c %**end of header
 
 @smallbook
-@set EDITION 0.3
-@set VERSION 2.5.2
-@set UPDATED February 2016
+@set EDITION 0.4
+@set VERSION 2.6.0
+@set UPDATED June 2016
 
 @dircategory Editors
 @direntry
@@ -21,13 +21,12 @@
 @titlepage
 @title @code{nano}
 @subtitle a small and friendly text editor.
-@subtitle version 2.5.2
+@subtitle version 2.6.0
 
 @author Chris Allegretta
 @page
 
-This manual documents @code{nano}, a small and friendly text
-editor.
+This manual documents @code{nano}, a small and friendly text editor.
 
 This manual is part of the @code{nano} distribution.@*
 @sp 4