Since Arduino 1.6.4 it has been easy to add support for other boards such as the Intel Galileo, in this case I have a lot of Attiny microcontrollers that I was going to see if I could program using the Arduino. Lets look at that process
Open the preferences windows : File -> preferences
Locate the Additional Boards Manager URLs box, it looks like this
You can add additional URLs as a comma seperated list or click on the icon to open an additional dialog box where you can paste one URL per line. You want to add the following URLs, this pulls in a variety of ATtiny devices
https://raw.githubusercontent.com/damellis/attiny/ide-1.6.x-boards-manager/package_damellis_attiny_index.json http://drazzy.com/package_drazzy.com_index.json http://openhardware.ro/boards/package_openhardwarero_index.json
Click OK to save this and then click OK to save the preferences.
Now open the Boards Manager by going to Tools -> Boards -> Board manager
You will see a list appear, the new options will appear at the bottom
Click on the attiny entry. An install button should appear. Click the install button.
The word “installed” should now appear next to the title of the attiny entry. In the screenshot below you can see I have installed various options
Close the boards manager. You should now see various new entries in the “Tools > Board” menu.