Use correct separator in keywords.txt

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

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

Arduino/ICP101xx/keywords.txt

@@ -1,21 +1,21 @@
 # Datatypes (KEYWORD1)
 
-ICP101xx		KEYWORD1
+ICP101xx	KEYWORD1
 
 # Methods and Functions (KEYWORD2)
 
-begin			KEYWORD2
-isConnected		KEYWORD2
-measure			KEYWORD2
+begin	KEYWORD2
+isConnected	KEYWORD2
+measure	KEYWORD2
 measureStart	KEYWORD2
-dataReady		KEYWORD2
+dataReady	KEYWORD2
 getTemperatureC	KEYWORD2
-getTemperatureF KEYWORD2
+getTemperatureF	KEYWORD2
 getPressurePa	KEYWORD2
 
 # Constants (KEYWORD3)
 
-FAST			LITERAL1
-NORMAL			LITERAL1
-ACCURATE		LITERAL1
+FAST	LITERAL1
+NORMAL	LITERAL1
+ACCURATE	LITERAL1
 VERY_ACCURATE	LITERAL1