Adding release target for bbsimctl and bbr

Change-Id: I80faba0b9d0eccee443353f8dc96faa3d4a1b80f
diff --git a/.gitignore b/.gitignore
index c904607..6c2287e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 /bbr
 /bbsim
 /bbsimctl
-logs/*
\ No newline at end of file
+logs/*
+release
\ No newline at end of file