Add deps for usermods/BME280_v2

Author: Will Tatam

usermods/BME280_v2/library.json

@@ -1,4 +1,7 @@
 {
   "name:": "BME280_v2",
-  "build": { "libArchive": false }
+  "build": { "libArchive": false },
+  "dependencies": {
+    "finitespace/BME280":"~3.0.0"
+  }
 }