Add CreateArray component. Relates to noflo#6.

component.json

@@ -40,6 +40,7 @@
     "components/CreateDate.coffee",
     "components/SetPropertyValue.coffee",
     "components/CallMethod.coffee",
+    "components/CreateArray.coffee",
     "index.js"
   ],
   "json": [
@@ -76,4 +77,4 @@
       "Values": "components/Values.coffee"
     }
   }
-}
+}

components/CreateArray.coffee

@@ -0,0 +1,23 @@
+noflo = require 'noflo'
+
+class CreateArray extends noflo.Component
+  constructor: ->
+    @inPorts = new noflo.InPorts
+      start:
+        datatype: 'bang'
+        description: 'Signal to create a new array'
+    @outPorts = new noflo.OutPorts
+      out:
+        datatype: 'array'
+        description: 'A new empty array'
+
+    @inPorts.start.on 'begingroup', (group) =>
+      @outPorts.out.beginGroup group
+    @inPorts.start.on "data", =>
+      @outPorts.out.send []
+    @inPorts.start.on 'endgroup', =>
+      @outPorts.out.endGroup()
+    @inPorts.start.on 'disconnect', =>
+      @outPorts.out.disconnect()
+
+exports.getComponent = -> new CreateArray