Added hack to pause between bluetooth connect and open

Sometimes, after a bluetooth connection succeeds, open() call fails. But
if a pause is introduced, open() works. So, introduced a retry count and
a pause of 100msec to allow the BT open to work properly.

Signed-off-by: Sateesh Kavuri <sateesh.kavuri@gmail.com>
Merge pull request #27 from kavuri/bt_conn_wait

Added hack to pause between bluetooth connect and open