v0.5.0.
Added full support for UNSUBSCRIBE without arguments.
Added patterns property in status.subscription.
On branch pubsub
modified:   Readme.md
modified:   lib/bilanx.js
modified:   package.json
modified:   test/push-subscription-mode-test.js
v0.5.0.
Added full support for (P)UNSUBSCRIBE without arguments.
Added patterns property to status.subscription.
Merge branch 'pubsub'