Drop stray references to lm-sensors.org

lm-sensors.org is no more, point to the I2C Tools wiki page instead.

README

@@ -6,6 +6,9 @@ These tools were originally part of the lm-sensors project but were finally
 split into their own package for convenience. They compile, run and have been
 tested on GNU/Linux.
 
+The latest version of the code can be downloaded from:
+  https://i2c.wiki.kernel.org/index.php/I2C_Tools
+
 
 CONTENTS
 --------

py-smbus/setup.py

@@ -10,5 +10,5 @@ setup(	name="smbus",
 	maintainer="Mark M. Hoffman",
 	maintainer_email="linux-i2c@vger.kernel.org",
 	license="GPLv2",
-	url="http://lm-sensors.org/",
+	url="https://i2c.wiki.kernel.org/index.php/I2C_Tools",
 	ext_modules=[Extension("smbus", ["smbusmodule.c"])])