Re-add the two selenium imports

Author: jbampton

test/test_integration.py

@@ -12,6 +12,8 @@
 import dash_html_components as html
 import dash_core_components as dcc
 import dash_table_experiments as dt
+from selenium import webdriver
+from selenium.webdriver.common.keys import Keys
 
 try:
     from urlparse import urlparse