added graphql provider test

pact/pact-node-provider/app.js

@@ -6,6 +6,7 @@ const logger = require('morgan');
 const indexRouter = require('./routes/index');
 const usersRouter = require('./routes/users');
 const heroesRouter = require('./routes/heroes');
+const graphqlRouter = require('./routes/graphql');
 const providerStateRouter = require ('./routes/provider_state');
 
 const app = express();
@@ -19,6 +20,7 @@ app.use(express.static(path.join(__dirname, 'public')));
 app.use('/', indexRouter);
 app.use('/users', usersRouter);
 app.use('/heroes', heroesRouter);
+app.use('/graphql', graphqlRouter);
 
 if (process.env.PACT_MODE === 'true') {
     app.use('/provider-state', providerStateRouter);