Installing the Eclipse Plugin

https://stuff.mit.edu/afs/sipb/project/android/docs/sdk/installing/installing-adt.html

Download the ADT Plugin

Start Eclipse, then select Help > Install NewSoftware.
Click Add, in the top-right corner.
In the Add Repository dialog that appears, enter "ADT Plugin" for the Name and thefollowing URL for the Location:
```
https://dl-ssl.google.com/android/eclipse/
```
Click OK.
If you have trouble acquiring the plugin, try using "http" in the Location URL,instead of "https" (https is preferred for security reasons).
In the Available Software dialog, select the checkbox next to Developer Tools and clickNext.
In the next window, you'll see a list of the tools to be downloaded. ClickNext.
Read and accept the license agreements, then click Finish.
If you get a security warning saying that the authenticity or validity ofthe software can't be established, click OK.
When the installation completes, restart Eclipse.