add limit by

pdb-js/src/app/limit-by/limit-by.component.ts

@@ -0,0 +1,18 @@
+import { Component, OnInit, Input} from '@angular/core';
+
+@Component({
+  selector: 'pdb-limit-by',
+  templateUrl: './limit-by.component.html',
+  styleUrls: ['./limit-by.component.scss']
+})
+export class LimitByComponent implements OnInit {
+
+  @Input() limit: number;
+
+  @Input() limitBy: string;
+
+  constructor() { }
+
+  ngOnInit() {
+  }
+}