Bug the user if they do not have chromedriver installed

deletefb/tools/common.py

@@ -30,3 +30,9 @@ def archiver(category):
         log_file.write("{0}\n".format(dumps(structured_content)))
 
     return (log_file, log)
+
+
+no_chrome_driver = """
+You need to install the chromedriver for Selenium\n
+Please see this link https://github.com/weskerfoot/DeleteFB#how-to-use-it\n
+"""

deletefb/tools/login.py

@@ -1,8 +1,10 @@
 import time
 
+from sys import stderr, exit
 from selenium.webdriver.chrome.options import Options
 from seleniumrequests import Chrome
 from selenium.common.exceptions import NoSuchElementException
+from .common import no_chrome_driver
 
 def login(user_email_address,
           user_password,
@@ -28,7 +30,15 @@ def login(user_email_address,
         chrome_options.add_argument('--disable-gpu')
         chrome_options.add_argument('log-level=2')
 
-    driver = Chrome(options=chrome_options)
+    try:
+        driver = Chrome(options=chrome_options)
+    except Exception as e:
+        # The user does not have chromedriver installed
+        # Tell them to install it
+        stderr.write(str(e))
+        stderr.write(no_chrome_driver)
+        exit(1)
+
     driver.implicitly_wait(10)
 
     driver.get("https://facebook.com")