Update doc

Author: Alba0404

README.md

@@ -70,6 +70,7 @@ This table groups Arduino's functions and there equivalent for MSP430.
 
 ## Example
 ```c
+#include <msp430.h>
 #include "msp430-arduino.h"
 
 #define PIN_LED    12  // A LED on the pin 2 of the port 1

msp430-arduino.h

@@ -31,18 +31,18 @@
 #define max(a,b) ((a)>(b)?(a):(b))
 #define abs(x) ((x)>0?(x):-(x))
 #define constrain(amt,low,high) ((amt)<(low)?(low):((amt)>(high)?(high):(amt)))
-#define round(x)     ((x)>=0?(long)((x)+0.5):(long)((x)-0.5))
+#define round(x) ((x)>=0?(long)((x)+0.5):(long)((x)-0.5))
 #define radians(deg) ((deg)*DEG_TO_RAD)
 #define degrees(rad) ((rad)*RAD_TO_DEG)
 #define sq(x) ((x)*(x))
 #define lowByte(w) ((uint8_t) ((w) & 0xff))
 #define highByte(w) ((uint8_t) ((w) >> 8))
-#define bitRead(value, bit) (((value) >> (bit)) & 0x01)
-#define bitSet(value, bit) ((value) |= (1UL << (bit)))
-#define bitClear(value, bit) ((value) &= ~(1UL << (bit)))
-#define bitToggle(value, bit) ((value) ^= (1UL << (bit)))
-#define bitWrite(value, bit, bitvalue) ((bitvalue) ? bitSet(value, bit) : bitClear(value, bit))
-#define bit(bit) (pow(2, bit))
+#define bitRead(value,bit) (((value) >> (bit)) & 0x01)
+#define bitSet(value,bit) ((value) |= (1UL << (bit)))
+#define bitClear(value,bit) ((value) &= ~(1UL << (bit)))
+#define bitToggle(value,bit) ((value) ^= (1UL << (bit)))
+#define bitWrite(value,bit,bitvalue) ((bitvalue) ? bitSet(value,bit) : bitClear(value,bit))
+#define bit(bit) (pow(2,bit))
 
 
 /**