Android Studio : Import third-party library or package into Gradle Scripts

A note for Android Studio beginner like myself. Encounter an instruction on Github on how to import a third-party library into Android Studio project. Trouble is, the instruction is just

 Gradle

 dependencies {
 compile 'com.daimajia.numberprogressbar:library:1.4@aar'
 }

Ok, so... how to import or compile the third-party library/package ??

After some 'rookie' trials and errors, the steps are:

1. In Android Studio, under Project, click Gradle Scripts and click on the build.gradle (Module: app) [position 1]

2. Add the line shown below at [position 2]

compile 'com.daimajia.numberprogressbar:library:1.4@aar'

Hope this helps!