fix clock pin when not using SPI

Author: schelmo

adafruit_ws2801.py

@@ -180,8 +180,8 @@ def fill(self, color):
     def _ds_writebytes(self, buf):
         for b in buf:
             for _ in range(8):
-                self.cpin.value = True
                 self.dpin.value = (b & 0x80)
+                self.cpin.value = True
                 self.cpin.value = False
                 b = b << 1