[package.json|dist] Released v0.8.7

[src/WebsocketificationClient] Return promise in #close(), #reconnect().

[src/WebsocketificationClient] Supported #reconnect().

[src/WebsocketificationClient] Supported auto reconnect/disconnect an…

…d heartbeat.

- and ready to release v0.8.4
- [webpack.config.js] Export packed code as umd module.
- [src/Response] Added Response class with a few methods.
- [src/WebsocketificationClient] Added auto reconnection support.
- [src/WebsocketificationClient] Added ping/pong heartbeat package support.
- [src/WebsocketificationClient] Skip if, obviously, not an json object is received.
- [src/WebsocketificationClient] Used mIsNicelyClosed flag instead of mStatus.
- [src/WebsocketificationClient] Added auto disconnection timeout policy.
- [src/WebsocketificationClient] Destructuring options parameter in constructor.
- [src/WebsocketificationClient] Added log for normal disconnection.
- [dist/WebsocketificationClient.js|~.js.map] Added compiled files to release for v0.8.4.

Published v0.8.2

Publish version 0.8.1

Published node modules v0.8.0.