title: Why set environment variable for GRADLE (Android Studio)?
body: <p>I have been working on Android Studio lately and I am able to develop apps. I add dependencies via build.gradle for external libraries. Everything seems to work just fine. Recently I was just trying read about gradle and I noticed it was needed of me to set "GRADLE_HOME%\bin" to system variable under path.</p>
  
  <p>I dont think I have set any environment variable for gradle.
  Being honest I didnt have proper guidance and I lack much knowledge regarding gradle.
  If somebody would kindly explain its purpose,I'd be thankful.</p>
  
  <p>edit-I have JAVA_HOME set,My question was not regarding that. I couldnt find anything regarding GRADLE_HOME being set,but it didn't seem to affect my work with android studio(involving gradle). Hence I wanted to know in what way it GRADLE_HOME was useful.</p>