Add 1 git-crypt collaborator

New collaborators:

	D6710B80 Adrià Vilanova Martínez <me@avm99963.com>

Change-Id: Ie22d635a160e617663a0688aaa5a749ce1ac3ba9
diff --git a/.git-crypt/.gitattributes b/.git-crypt/.gitattributes
new file mode 100644
index 0000000..665b10e
--- /dev/null
+++ b/.git-crypt/.gitattributes
@@ -0,0 +1,4 @@
+# Do not edit this file.  To specify the files to encrypt, create your own
+# .gitattributes file in the directory where your files are.
+* !filter !diff
+*.gpg binary