Rename "roles" to "units". Put units in their own folders.

lib/units/device/plugins/store.js

@@ -0,0 +1,40 @@
+var syrup = require('syrup')
+
+var logger = require('../../../util/logger')
+var wire = require('../../../wire')
+var wireutil = require('../../../wire/util')
+
+module.exports = syrup.serial()
+  .dependency(require('../support/router'))
+  .dependency(require('../support/push'))
+  .dependency(require('../support/adb'))
+  .define(function(options, router, push, adb) {
+    var log = logger.createLogger('device:plugins:store')
+
+    router.on(wire.StoreOpenMessage, function(channel) {
+      log.info('Opening Play Store')
+
+      var reply = wireutil.reply(options.serial)
+      adb.startActivity(options.serial, {
+          action: 'android.intent.action.MAIN'
+        , component: 'com.android.vending/.AssetBrowserActivity'
+          // FLAG_ACTIVITY_RESET_TASK_IF_NEEDED
+          // FLAG_ACTIVITY_BROUGHT_TO_FRONT
+          // FLAG_ACTIVITY_NEW_TASK
+        , flags: 0x10600000
+        })
+        .then(function() {
+          push.send([
+            channel
+          , reply.okay()
+          ])
+        })
+        .catch(function(err) {
+          log.error('Play Store could not be opened', err.stack)
+          push.send([
+            channel
+          , reply.fail()
+          ])
+        })
+    })
+  })