title: Reduce size of PrimeNg Library with Angular Cli
body: <p>PrimeNg is a big library containing many components. My angular application is using only few components out of it.
  And I am using AngularCLI to build this application.
  When I build it, vendor.bundle has entire content of primeng library. This makes huge size of bundle size (~4MB).</p>
  
  <p>How can I include only necessary components instead of full library?</p>