Updated to version 1.4

[ADDED]  superuser access verification at startup;
[ADDED]  a new function that automatically tries to find a deactivation
code, the code (if found) will be automatically used;
[FIXED]  "Discrete GPU correctly deactivated" (in deactivation function)
that wasn't appearing sometimes;
[FIXED]  useless error reporting by insmod while performing a
deactivation;

code cleanup and improvements.