Tune gitignore for this repo

Change-Id: I5d9fe224d31914e9fa5888d0a6d32a4b41bdd2ae
diff --git a/.gitignore b/.gitignore
index 3060674..054b8b3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,7 @@
 .gradle
 build
-.idea
\ No newline at end of file
+.idea
+.project
+.settings
+.classpath
+/bin/**
\ No newline at end of file