Updated readme with Arduino IDE download link and namespace info

Author: j54n1n

README.md

@@ -1,8 +1,11 @@
 # arduino-libraries
-Reusable generic libraries for Arduino projects
+Reusable generic libraries for Arduino projects. The libraries are prefixed with
+the *asl* namespace (short for Arduino Standard Library) to avoid name clashes
+with existing libraries.
 
-This set of libraries require at least Arduino IDE v1.6.8, where v1.8.1 or newer
-is recommended.
+This set of libraries require at least
+[Arduino IDE](https://www.arduino.cc/en/Main/Software) v1.6.8, where v1.8.1 or
+newer is recommended.
 
 ## How to install
 ### Manual Installation