Add IntelliJ files to gitignore

Change-Id: Iebbb1689f7f374e4ced1cd303ca409d2fd8ea112
Issue-ID: CCSDK-505
Signed-off-by: Alexis de Talhouët <adetalhouet89@gmail.com>
diff --git a/.gitignore b/.gitignore
index 8573116..7b31b2f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
+.idea
+*.iml
 .checkstyle
 .classpath
 .project