Travis DB setup

- Added testing setup command for configuring testing db and environment
- Updated travis.yml to use MySQL service

Apply fixes from StyleCI

added user to access db in travis.yml

updates

updates

Apply fixes from StyleCI

app/Http/helpers.php

@@ -270,3 +270,23 @@ function exceptionResponse(\Exception $exception)
             'exception'  => $exception->getMessage(),
         ], 500);
 }
+
+/**
+ * Creates an empty DB with given name.
+ *
+ * @param string $dbName name of the DB
+ *
+ * @return null
+ */
+function createDB(string $dbName)
+{
+    \DB::purge('mysql');
+    // removing old db
+    \DB::connection('mysql')->getPdo()->exec("DROP DATABASE IF EXISTS `{$dbName}`");
+
+    // Creating testing_db
+    \DB::connection('mysql')->getPdo()->exec("CREATE DATABASE `{$dbName}`");
+    //disconnecting it will remove database config from the memory so that new database name can be
+    // populated
+    \DB::disconnect('mysql');
+}