Whitespace fix

Author: tdicola

setup.py

@@ -77,7 +77,7 @@
       author_email      = 'tdicola@adafruit.com',
       description       = 'Library to get readings from the DHT11, DHT22, and AM2302 humidity and temperature sensors on a Raspberry Pi or Beaglebone Black.',
       license           = 'MIT',
-	  classifiers       = classifiers,
+      classifiers       = classifiers,
       url               = 'https://github.com/adafruit/Adafruit_Python_DHT/',
       packages          = find_packages(),
       ext_modules       = extensions)