Add a .gitignore file to ignore .iml files. am: 2e9854c9a8 am: 8f843e50b0 am: 3e2b90ebb4

Change-Id: I56844d1eed615c2c3ccc28cf45f35d03dea3455d
tree: 09a8a786c4abe9b71e970edb2f7939871205f8f0
  1. java/
  2. tests/
  3. .gitignore
  4. Android.bp