Front facing camera (#289)

* Front facing camera

* Adding in configuration and update script

bin/lamassu-configure-frontcamera

@@ -0,0 +1,12 @@
+#!/usr/bin/env node
+
+'use strict'
+
+const fs = require('fs')
+const options = require('../lib/options-loader')()
+
+if (!options.opts.frontCameraDir) {
+  options.opts.frontCameraDir = '/opt/lamassu-server/frontcamera'
+
+  fs.writeFileSync(options.path, JSON.stringify(options.opts, null, '\t'), 'utf8')
+}