Using 'latest' url for download links

Author: cmaglie

README.md

@@ -16,13 +16,14 @@ This is **not yet available** until the first stable version is released.
 
 #### Download the latest unstable "alpha" preview
 
-Please note that these are **preview** build, they may have bugs, some features may not work or may be changed without notice:
-
-- [Linux 64 bit 0.3.2-alpha.preview](https://downloads.arduino.cc/arduino-cli/arduino-cli-0.3.2-alpha.preview-linux64.tar.bz2)
-- [Linux 32 bit 0.3.2-alpha.preview](https://downloads.arduino.cc/arduino-cli/arduino-cli-0.3.2-alpha.preview-linux32.tar.bz2)
-- [Linux ARM 0.3.2-alpha.preview](https://downloads.arduino.cc/arduino-cli/arduino-cli-0.3.2-alpha.preview-linuxarm.tar.bz2)
-- [Windows 0.3.2-alpha.preview](https://downloads.arduino.cc/arduino-cli/arduino-cli-0.3.2-alpha.preview-windows.zip)
-- [Mac OSX 0.3.2-alpha.preview](https://downloads.arduino.cc/arduino-cli/arduino-cli-0.3.2-alpha.preview-osx.zip)
+Please note that these are **preview** build, they may have bugs, some features may not work or may be changed without notice,
+the latest preview version is `0.3.2-alpha.preview`:
+
+- [Linux 64 bit](https://downloads.arduino.cc/arduino-cli/arduino-cli-latest-linux64.tar.bz2)
+- [Linux 32 bit](https://downloads.arduino.cc/arduino-cli/arduino-cli-latest-linux32.tar.bz2)
+- [Linux ARM](https://downloads.arduino.cc/arduino-cli/arduino-cli-latest-linuxarm.tar.bz2)
+- [Windows](https://downloads.arduino.cc/arduino-cli/arduino-cli-latest-windows.zip)
+- [Mac OSX](https://downloads.arduino.cc/arduino-cli/arduino-cli-latest-osx.zip)
 
 ### Build the latest "bleeding-edge" from source