Ignore shell script files at root in .gitignore

Updated .gitignore to specifically exclude shell script files located in
the root directory.

Change-Id: I0dc7873a5901815480a39b73728057da5f41af92
Signed-off-by: Patrizio <patrizio.gelosi@amarulasolutions.com>

.gitignore

diff --git a/.gitignore b/.gitignore
index c81f16a..0683fbb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@
 /.settings
 /.project
 *.iml
+*.sh