Remove leading space from keywords.txt identifier

Each field of keywords.txt is separated by a single true tab. Leading spaces on a keyword identifier causes it to not be recognized by the Arduino IDE. On Arduino IDE 1.6.5 and newer an unrecognized keyword identifier causes the default editor.function.style highlighting to be used (as with KEYWORD2, KEYWORD3).

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

Author: per1234

keywords.txt

@@ -6,7 +6,7 @@
 # Datatypes (KEYWORD1)
 #######################################
 
-Xively            KEYWORD1
+Xively	KEYWORD1
 XivelyClient	KEYWORD1
 XivelyDatastream	KEYWORD1
 XivelyFeed	KEYWORD1
@@ -30,7 +30,7 @@ size	KEYWORD2
 #######################################
 # Constants (LITERAL1)
 #######################################
-DATASTREAM_STRING 0 LITERAL1
-DATASTREAM_BUFFER 1 LITERAL1
-DATASTREAM_FLOAT 2 LITERAL1
+DATASTREAM_STRING	LITERAL1
+DATASTREAM_BUFFER	LITERAL1
+DATASTREAM_FLOAT	LITERAL1