Avoid trademark issues with library name

Added frameworks and platforms fields

library.json

@@ -1,10 +1,12 @@
 {
-  "name": "Arduino-IRremote",
+  "name": "IRremote",
   "keywords": "infrared, ir, remote",
   "description": "Send and receive infrared signals with multiple protocols",
   "repository":
   {
     "type": "git",
     "url": "https://github.com/shirriff/Arduino-IRremote.git"
-  }
+  },
+  "frameworks": "arduino",
+  "platforms": "atmelavr"
 }