$ sudo apt-get update
$ sudo apt-get install libindicator-dev 

libindicator-dev is installed in your system.

Make ensure the libindicator-dev package were installed using the commands given below,

$ sudo dpkg-query -l | grep libindicator-dev *

You will get with libindicator-dev package name, version, architecture and description in a table

libindicator-dev package basic information: