Fixed erroneous Python syntax, thanks Livio

README

@@ -31,11 +31,11 @@ Class-based Usage:
 
 Usage:
     import wiringpi2
-    wiringpi2.wiringPiSetup // For sequential pin numbering, one of these MUST be called before using IO functions
+    wiringpi2.wiringPiSetup() // For sequential pin numbering, one of these MUST be called before using IO functions
     OR
-    wiringpi2.wiringPiSetupSys // For /sys/class/gpio with GPIO pin numbering
+    wiringpi2.wiringPiSetupSys() // For /sys/class/gpio with GPIO pin numbering
     OR
-    wiringpi2.wiringPiSetupGpio // For GPIO pin numbering
+    wiringpi2.wiringPiSetupGpio() // For GPIO pin numbering
 
     Setting up IO expanders (This example was tested on a quick2wire board with one digital IO expansion board connected via I2C):
     wiringpi2.mcp23017Setup(65,0x20)