[atk] meson: Install atk.h

[Emmanuele Bassi <ebassi src gnome org>]

commit 73a3aa6e7947512343a133e777c21c0af3d368dd
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Tue May 23 05:06:01 2017 +0100

    meson: Install atk.h
    
    We're missing atk.h from the list of installed header.

 atk/meson.build |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/atk/meson.build b/atk/meson.build
index 83ae5ba..82aae86 100644
--- a/atk/meson.build
+++ b/atk/meson.build
@@ -34,6 +34,7 @@ atk_sources = [
 ]
 
 atk_headers = [
+  'atk.h',
   'atkaction.h',
   'atkcomponent.h',
   'atkdocument.h',