[clutter] docs: Move contribution guide to the top-level directory

[Emmanuele Bassi <ebassi src gnome org>]

commit d78670077e0d3165075725b85cc726f166f4511e
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Mon Jun 18 18:54:25 2018 +0100

    docs: Move contribution guide to the top-level directory
    
    That's where GitLab expects it.

 doc/CONTRIBUTING.md => CONTRIBUTING.md | 0
 Makefile.am                            | 1 +
 doc/Makefile.am                        | 1 -
 3 files changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/doc/CONTRIBUTING.md b/CONTRIBUTING.md
similarity index 100%
rename from doc/CONTRIBUTING.md
rename to CONTRIBUTING.md
diff --git a/Makefile.am b/Makefile.am
index cd1093291..c4d56d87e 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -17,6 +17,7 @@ ACLOCAL_AMFLAGS = -I build-aux/autotools ${ACLOCAL_FLAGS}
 
 EXTRA_DIST = \
        ChangeLog.pre-git-import        \
+       CONTRIBUTING.md                 \
        COPYING                         \
        README.md                       \
        NEWS                            \
diff --git a/doc/Makefile.am b/doc/Makefile.am
index 4e50f2470..3a7d04190 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -12,5 +12,4 @@ DIST_SUBDIRS = reference cookbook
 
 EXTRA_DIST = \
        CODING_STYLE.txt \
-       CONTRIBUTING.md \
        BACKENDS.md