emils suggestions

README.md

@@ -83,13 +83,13 @@ hl will read from stdin and write to stdout.
 ### Cli Options
 ```bash
 	-h          : display help message
-	-F <dir>    : syntax file look up directory
+	-I <dir>    : syntax file look up directory
 	-s <syntax> : specify syntax to load
 ```
 
 ### Environment variables
 ```bash
-	HL_HOME	: default directory to load syntax files from
+	$HLPATH	: colon separated list of directories searched for syntax script files
 ```
 
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