Declare delayDefault as a variable.
Handle missing transport in send() and close().

The transport might be missing if we are in the
middle of a reconnect attempt.
Drop transport reference after closing.
Support EventSource as a transport.
Use erlang.mk for the build system
Update Cowboy dependency to 0.8.4
Merge branch 'eventsource' of git://github.com/jdavisp3/bullet
Cancel the refresh timer in terminate/2.
Distinguish different bullet connections in ping messages.
Individual bullet connections in the example can be enabled/disabled.

This illustrates how to close bullet connections.
Merge branch 'example-fix-poll' of git://github.com/jdavisp3/bullet
Merge branch 'example-enhance' of git://github.com/jdavisp3/bullet
Update erlang.mk
Ignore close callback when closed.

This fixes a bug where closing a bullet
connection in poll mode will not work.
Fix jshint warning.
Drop reference to xhr request when done.
Add buttons to demonstrate sending for all bullet connections.
Use xhr for sending with eventsource connections.
Remove unknown keys from .app.src file
Merge branch 'eventsource-xhr-send' of git://github.com/jdavisp3/bullet