added error checking while checking for updates

sherlock/sherlock.py

@@ -494,7 +494,10 @@ def main():
     args = parser.parse_args()
 
     # Check for newer version of Sherlock. If it exists, let the user know about it
+
+    try:
         r = requests.get("https://raw.githubusercontent.com/sherlock-project/sherlock/master/sherlock/sherlock.py")
+
         remote_version = str(re.findall('__version__ = "(.*)"', r.text)[0])
         local_version = __version__
 
@@ -502,6 +505,9 @@ def main():
             print("Update Available!\n" +
                   f"You are running version {local_version}. Version {remote_version} is available at https://git.io/sherlock")
     
+    except Exception as error:
+        print(f"A problem occured while checking for an update: {error}")
+
 
     # Argument check
     # TODO regex check on args.proxy