Update README.md

Author: epiller

README.md

@@ -56,10 +56,6 @@ In the blink of an eye, you'll be able to extract, visualize and use the collect
 
 # Installation
 
-> **NOTICE: Until Arduino approves this SDK into their Library Manager, use this method:**  
-> [Download the library as zip file](https://github.com/allthingstalk/arduino-wifi-sdk/archive/master.zip), unzip it and copy the folder to your Arduino libraries folder (most likely *Documents > Arduino > libraries*).  
-> Install dependencies normally as stated below.
-
 - **To install AllThingsTalk WiFi SDK:**  
     - In Arduino IDE, go to *Tools* > *Manage Libraries*
     - Search for and download "**AllThingsTalk WiFi SDK**" by AllThingsTalk