Adding pyang folder to .gitignore

Change-Id: I3b2a87cddb1d202875988da6e821fc78a7d15691
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/.gitignore b/.gitignore
index 5fecc9a..0025eee 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,5 +7,6 @@
 *.gz
 osm_im
 pyangbind
+pyang
 dists
 pool