readme updates, fixed typo

Brendan Whitfield · Brendan Whitfield · commit 63c85f66931d · 2014-10-23T22:16:50.000-04:00
diff --git a/README.md b/README.md
@@ -52,8 +52,20 @@ Commands can also be accessed explicitly, either by name, or by code value. The
 
 	connection = obd.OBD()
 
-	if connection.has_command(obd.commands.RPM):    # check for existance of sensor
-		print connection.query(obd.commands.RPM)    # get and print value of sensor
+
+	c = obd.commands.RPM
+
+	# OR
+
+	c = obd.commands['RPM']
+
+	# OR
+
+	c = obd.commands[1][12] # mode 1, PID 12 (decimal)
+
+
+	if connection.has_command(c):        # check for existance of sensor
+		print connection.query(c).value  # get and print value of sensor
 
 
 Here are a few of the currently supported commands (for a full list, see commands.py):
@@ -76,7 +88,7 @@ Here are a few of the currently supported commands (for a full list, see command
 + Number of warm-ups since codes cleared
 + Distance traveled since codes cleared
 + Evaporative system vapor pressure
-+ Baromtric Pressure
++ Barometric Pressure
 + Control module voltage
 + Relative throttle position
 + Ambient air temperature
diff --git a/obd/commands.py b/obd/commands.py
@@ -151,7 +151,7 @@ def compute(self, _data):
 	OBDCommand("WARMUPS_SINCE_DTC_CLEAR"	, "Number of warm-ups since codes cleared"	, "01", "30", 1, count				),
 	OBDCommand("DISTANCE_SINCE_DTC_CLEAR"	, "Distance traveled since codes cleared"	, "01", "31", 2, distance			),
 	OBDCommand("EVAP_VAPOR_PRESSURE"		, "Evaporative system vapor pressure"		, "01", "32", 2, evap_pressure		),
-	OBDCommand("BAROMETRIC_PRESSURE"		, "Baromtric Pressure"						, "01", "33", 1, pressure			),
+	OBDCommand("BAROMETRIC_PRESSURE"		, "Barometric Pressure"						, "01", "33", 1, pressure			),
 	OBDCommand("O2_S1_WR_CURRENT"			, "02 Sensor 1 WR Lambda Current"			, "01", "34", 4, current_centered	),
 	OBDCommand("O2_S2_WR_CURRENT"			, "02 Sensor 2 WR Lambda Current"			, "01", "35", 4, current_centered	),
 	OBDCommand("O2_S3_WR_CURRENT"			, "02 Sensor 3 WR Lambda Current"			, "01", "36", 4, current_centered	),
