README.org: fzf example: preview window make bigger

Was 50%:50% and by UX we do not need the half of the screen for the dictionary name.

README.org

@@ -21,17 +21,6 @@ make install
 #+END_SRC
 you can use "DESTDIR" variable to change installation path
 
-* Integration with [[https://github.com/junegunn/fzf][fzf]]
-Useful when you have multiple dictionaries
-#+BEGIN_SRC sh
-fzf --prompt="Dict: " \
-    --phony \
-    --bind "enter:reload(sdcv {q} -n --json | jq '.[].dict' -r)" \
-    --preview "sdcv {q} -en --use-dict={}" \
-    --preview-window=wrap \
-   < <(echo)
-#+END_SRC
-
 * Documentation
 See sdcv man page for usage description.
 
@@ -40,6 +29,26 @@ To report bugs use https://github.com/Dushistov/sdcv/issues ,
 if it is not possible you can report it via email to dushistov at mail dot ru.
 Be sure to include the word "sdcv" somewhere in the "Subject:" field.
 
+* Integration with [[https://github.com/junegunn/fzf][fzf]]
+Useful when you have multiple dictionaries
+#+BEGIN_SRC sh
+fzf --prompt="Dict: " \
+    --phony \
+    --bind "enter:reload(sdcv {q} -n --json | jq '.[].dict' -r)" \
+    --preview "sdcv {q} -en --use-dict={}" \
+    --preview-window=right:70%:wrap \
+   < <(echo)
+#+END_SRC
+
+* Integration with readline
+This lines can be added to inputrc file (~/.inputrc, /etc/inputrc),
+to abort multiply usage with ESC:
+#+begin_src
+$if sdcv
+    "\e\e": "-1\n"
+$endif
+#+end_src
+
 * Notes to developer
 ** make source code release
 #+BEGIN_SRC sh

src/libwrapper.cpp

@@ -23,6 +23,7 @@
 #endif
 
 #include <cstring>
+#include <cstdio> //for popen
 #include <map>
 #include <memory>