Add setting for taxrate and billingcharge

app/Http/Controllers/SettingTaxRateController.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use Illuminate\Http\Request;
+use App\SettingTaxRate;
+
+class SettingTaxRateController extends Controller
+{
+	public function index()
+	{
+	    $setting_tax = SettingTaxRate::latest()->first();
+	    return response()->json($setting_tax, 201);
+	}
+
+	public function update(Request $request)
+	{
+	    if($setting_tax = SettingTaxRate::latest()->first())
+	        $setting_tax->update($request->all());
+	    else
+	        $setting_tax = SettingTaxRate::create($request->all());
+
+	    return response()->json($setting_tax, 200);
+	}
+}