art: Add a few more patterns to .gitignore

Ignore compiled python files, IDEA (intellij) projects, etc.

Change-Id: I34d303d051c203ec910bf5753ccd916d71857cb2
diff --git a/.gitignore b/.gitignore
index 4e806c6..803c297 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,6 @@
 JIT_ART
 **/__pycache__/**
+**/.idea
+**/*.iml
+**/*.pyc
+**/*.swn