Add task for packaging release (#6)

* Add task for packaging release

* Modify package task to package a single binary

This is so it can be used as part of the build/release script.

* Package release as part of Travis deploy

* Set platform env var

* Add arch env var

* Make version available to the code

* Use tar for Linux and zip for Mac & Windows

scripts/webpack.general.config.js

@@ -118,6 +118,7 @@ module.exports = (options = {}) => ({
 			"process.env.NODE_ENV": `"${environment}"`,
 			"process.env.LOG_LEVEL": `"${process.env.LOG_LEVEL || ""}"`,
 			"process.env.SERVICE_URL": `"${process.env.SERVICE_URL || ""}"`,
+			"process.env.VERSION": `"${process.env.VERSION || ""}"`,
 		}),
 	],
 	stats: {