Add pipe for converting token values to Wei standards.

src/app/shared/_pipes/token-ratio.pipe.ts

@@ -0,0 +1,8 @@
+import {Pipe, PipeTransform} from '@angular/core';
+
+@Pipe({name: 'tokenRatio'})
+export class TokenRatioPipe implements PipeTransform {
+  transform(value: any, ...args): any {
+    return Number(value) / Math.pow(10, 18);
+  }
+}