Fix issue when the file names contain "temp"
Fix issue when the file names contain "temp"

The file selection only scan for the string "temp" in the file names.
This trigger false positive. According to the kernel documentation
for the hwmon sysfs interface, the temperatures *start* with the string
"temp":

 https://www.kernel.org/doc/Documentation/hwmon/sysfs-interface

Using the startswith function on the string solves the issue.

Fixes #5

rossdylan/Thermic