Merge branch 'master' into v1

docs/acc-ref.json

@@ -1,3 +0,0 @@
-{
-    "appref": "v0.13"
-}

docs/alpha-ref.json

@@ -0,0 +1,3 @@
+{
+    "appref": "v1"
+}

docs/courses/csintro.md

@@ -11,7 +11,7 @@ This course takes approximately 14 weeks to complete, spending about 1 week on e
 ### ~ hint
 **Download it**
 
-The entire course is also available as a download. Choose any of these formats:
+The entire course is also available as a download or as a book. Choose any of these formats:
 
 |||
 |-|-|
@@ -19,6 +19,7 @@ The entire course is also available as a download. Choose any of these formats:
 | [![](/static/courses/csintro/icons/microsoft-onenote-24x24.png)](https://aka.ms/MakeCodeforMicroBitNotebook) | [- **OneNote** - Intro to CS with MakeCode for micro:bit](https://aka.ms/MakeCodeforMicroBitNotebook) |
 | [![](/static/courses/csintro/icons/adobe-pdf-file-icon-24x24.png)](https://1drv.ms/b/s!AqsgsTyHBmRBgQ1Fjzm5y5wKG75M) | [- **PDF** - Intro to CS with MakeCode for micro:bit](https://1drv.ms/b/s!AqsgsTyHBmRBgQ1Fjzm5y5wKG75M) |
 | [![](/static/courses/csintro/icons/apple-itunes-ibook-24x24.png)](https://itunes.apple.com/us/book/making-with-micro-bit/id1255260221?mt=11) | [- **iBooks** - Making with micro:bit](https://itunes.apple.com/us/book/making-with-micro-bit/id1255260221?mt=11) |
+| [![](/static/courses/csintro/icons/paperback-book-24x24.png)](http://www.lulu.com/shop/mary-douglas-kiang/making-with-makecode-microbit/paperback/product-23457217.html) | [- **Paperback** - Making with MakeCode and Micro:bit](http://www.lulu.com/shop/mary-douglas-kiang/making-with-makecode-microbit/paperback/product-23457217.html) |
 ### ~
 
 ### Lesson structure

docs/packages.md

@@ -127,6 +127,10 @@
   "name": "Pimoroni Scrollbit",
   "url":"/pkg/pimoroni/pxt-scrollbit",
   "cardType": "package"
+  }, {
+  "name": "SBRICK",
+  "url":"/pkg/vengit/pxt-sbrick",
+  "cardType": "package"
 }]
 
 ```

targetconfig.json

@@ -25,7 +25,8 @@
             "sunfounder/pxt-sloth",
             "4tronix/BitBot",
             "pimoroni/pxt-scrollbit",
-            "emwta/pxt-iBit"
+            "emwta/pxt-iBit",
+            "vengit/pxt-sbrick"
 
         ],
         "preferredRepos": [