Use correct field separator in keywords.txt

The Arduino IDE requires the use of a single true tab separator between the name and identifier. Without a tab the keyword is not highlighted.

Reference:
https://github.com/arduino/Arduino/wiki/Arduino-IDE-1.5:-Library-specification#keywords

Author: per1234

Sweep/keywords.txt

@@ -11,7 +11,7 @@ ScanPacket	KEYWORD1
 #######################################
 # Methods and functions (KEYWORD2)
 #######################################
-isScanning  KEYWORD2
+isScanning	KEYWORD2
 startScanning	KEYWORD2
 stopScanning	KEYWORD2
 getReading	KEYWORD2