Release Next as Latest

[shellscape]

This is a checklist for the tasks that need to be completed to release koa-hbs@next as koa-hbs@latest, and deprecate 0.9.0.

• Remove gulp and convert task runner to use NPM scripts
• Update mocha
• Refactor using Node 8/9 feature sets (object destructuring, etc)
• Leverage babel and babel-preset-env to compile dist file targeting Node 6
• Resolve [question] Name convention  #70
• Update README

We're welcoming anyone that would like to contribute pull requests to satisfy this list. If [you] have other suggestions for improvements for 1.0.0, please do share them.

[kevinrambaud]

Great @shellscape I'm interested to work on some of the tasks, will soon submit some PR.

[shellscape]

@kevinrambaud wonderful!