add dht11-12 (#1943)

docs/extensions.md

@@ -256,6 +256,10 @@ Check out [microbit.org](http://microbit.org/resellers/) for more information on
     "name": "Imagimaker Magisheild",
     "url":"/pkg/Imagimaker/pxt-imagimaker",
     "cardType": "package"
+}, {
+    "name": "DHT11 & DHT22 Temperature and Humidity",
+    "url":"/pkg/alankrantas/pxt-DHT11_DHT22",
+    "cardType": "package"
 }, {
     "name": "gator:light Light sensor",
     "url":"/pkg/sparkfun/pxt-gator-light",

targetconfig.json

@@ -119,9 +119,8 @@
             "lwchkg/pxt-proportional-font",
             "jcubuntu/pxt-iKB1",
             "KitronikLtd/pxt-kitronik-accessbit",
-            "kaku111/pxt-tobbieII"
-
-
+            "kaku111/pxt-tobbieII",
+            "alankrantas/pxt-DHT11_DHT22"
         ],
         "preferredRepos": [
             "Microsoft/pxt-neopixel",