[devhelp] Update README

[Frederic Peters <fpeters src gnome org>]

commit 481cb21ce13cbb113916e93e74e4cc768e0ddef3
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Fri May 15 18:57:21 2015 +0200

    Update README
    
    https://bugzilla.gnome.org/show_bug.cgi?id=749452

 README |   10 ++++------
 1 files changed, 4 insertions(+), 6 deletions(-)
---
diff --git a/README b/README
index 2256346..6781f8f 100644
--- a/README
+++ b/README
@@ -3,11 +3,9 @@ Devhelp information
 
 The following packages are required to compile Devhelp:
 
-glib 2.10.0 (or greater)
-gtk+ 2.10.0 (or greater)
-libwnck 2.10.0 (or greater, only for X11 build)
-gconf 2.6.0 (or greater, only for X11 build)
-webkit
+glib 2.38 (or greater)
+gtk+ 3.14 (or greater)
+webkit2gtk-3.0 (or greater)
 
 Devhelp's primary goal is to be an API documentation browser for
 GNOME. When you build (or install) a GNOME library, it will build an
@@ -38,7 +36,7 @@ $XDG_DATA_DIRS/devhelp/books
 $XDG_DATA_DIRS/gtk-doc/html
    e.g. /usr/local/share/gtk-doc/html/glib-2.0/glib-2.0.devhelp
 
-Note that the two latter consist of: separated lists of directories to
+Note that the two latter consist of :-separated lists of directories to
 look for. Those environment variables are normally set up by the
 desktop environment or distribution.