Add the hello world Roku app as a base

Makefile

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+#
+#  Copyright (c) 2015 Roku, Inc. All rights reserved.
+#  Simple Makefile for Roku Channel Development
+#
+
+APPNAME = hello-world
+IMPORTS = 
+
+APPSROOT = ..
+include $(APPSROOT)/app.mk

components/helloworld.xml

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+<?xml version="1.0" encoding="utf-8" ?>
+<component name="HelloWorld" extends="Scene">
+	<children>
+      <Label id="myLabel"
+      	text="Hello me!"
+      	width="1280"
+      	height="720"
+      	horizAlign="center"
+      	vertAlign="center"
+      	/>
+    </children>
+<!-- BrightScript Portion -->
+<script type="text/brightscript" >
+<![CDATA[
+  '**
+  '** Example: Edit a Label size and color with BrightScript
+  '**
+
+  function init()
+    m.top.setFocus(true)
+    m.myLabel = m.top.findNode("myLabel")
+
+    'Set the font size
+    m.myLabel.font.size=92
+
+    'Set the color to light blue
+    m.myLabel.color="0x72D7EEFF"
+
+    '**
+    '** The full list of editable attributes can be located at:
+    '** http://sdkdocs.roku.com/display/sdkdoc/Label#Label-Fields
+    '**
+  end function
+]]>
+</script>
+<!-- End of BrightScript Portion -->
+</component>

manifest

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+#
+#  Copyright (c) 2015 Roku, Inc. All rights reserved.
+#  Roku Channel Manifest File 
+#  Full spec at bit.ly/roku-manifest-file
+#
+
+##   Channel Details
+title=Hello World
+major_version=1
+minor_version=0
+build_version=00001
+
+##   Channel Assets
+###  Main Menu Icons / Channel Poster Artwork 
+#### Image sizes are FHD: 540x405px | HD: 290x218px | SD: 214x144px
+mm_icon_focus_fhd=pkg:/images/channel-poster_fhd.png
+mm_icon_focus_hd=pkg:/images/channel-poster_hd.png
+mm_icon_focus_sd=pkg:/images/channel-poster_sd.png
+
+###  Splash Screen + Loading Screen Artwork 
+#### Image sizes are FHD: 1920x1080px | HD: 1280x720px | SD: 720x480px
+splash_screen_fhd=pkg:/images/splash-screen_fhd.jpg
+splash_screen_hd=pkg:/images/splash-screen_hd.jpg
+splash_screen_sd=pkg:/images/splash-screen_sd.jpg
+
+splash_color=#000000
+splash_min_time=1

source/Main.brs

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+'*************************************************************
+'** Hello World example 
+'** Copyright (c) 2015 Roku, Inc.  All rights reserved.
+'** Use of the Roku Platform is subject to the Roku SDK Licence Agreement:
+'** https://docs.roku.com/doc/developersdk/en-us
+'*************************************************************
+
+sub Main()
+    print "in showChannelSGScreen"
+    'Indicate this is a Roku SceneGraph application'
+    screen = CreateObject("roSGScreen")
+    m.port = CreateObject("roMessagePort")
+    screen.setMessagePort(m.port)
+
+    'Create a scene and load /components/helloworld.xml'
+    scene = screen.CreateScene("HelloWorld")
+    screen.show()
+
+    while(true)
+        msg = wait(0, m.port)
+        msgType = type(msg)
+        if msgType = "roSGScreenEvent"
+            if msg.isScreenClosed() then return
+        end if
+    end while
+end sub
+