2.1.3: Better WPS attack messaging. Leave device in Monitor Mode.

Unrelated to WPS:
* Do not take device out of monitor mode when finished (informs user)
* Do not restart NetworkManager when finished (informs user)

Changes to CLI switches:
* --wps-time X: Total time for WPS attack to complete
* --wps-timeouts X: Max number of timeouts before failing
* --wps-fails X: Max number of WPSFails before failing
* Removed unused WPS switches.
* Improved --help messaging for WPS switches.
* Fail/Timeout threshold default is 100

Bully now outputs useful information:
* Current PIN + status
* Time remaining
* Number of Timeout messages
* Number of "WPSFail" messages
* If AP is locked

Better reaver output.
* Looks more like Bully's output.
* Timer shows time remaining for attack.
* Mentions "Running pixiewps" during "M2 message" step.
* pixiewps failure looks like this: "Reaver says: 'WPS pin not found'"
* Counts Timeouts and "WPS Transaction Failure" (WPSFail)

For #28

wifite/attack/wps.py

@@ -29,19 +29,18 @@ class AttackWPS(Attack):
             bully = Bully(self.target)
             bully.run()
             bully.stop()
-            if bully.crack_result is not None:
-                self.crack_result = bully.crack_result
-                self.success = True
-                return True
+            self.crack_result = bully.crack_result
+            self.success = self.crack_result is not None
+            return self.success
         else:
             reaver = Reaver(self.target)
             if reaver.is_pixiedust_supported():
                 # Reaver: Pixie-dust
                 reaver = Reaver(self.target)
-                if reaver.run_pixiedust_attack():
-                    self.crack_result = reaver.crack_result
-                    self.success = True
-                    return True
+                reaver.run()
+                self.crack_result = reaver.crack_result
+                self.success = self.crack_result is not None
+                return self.success
             else:
                 Color.pl("{!} {R}your version of 'reaver' does not support the {O}WPS pixie-dust attack{W}")