Initial commit.
Started section on check_mk integration.
Completed command line parsing.
Added vprint function.
Added verbosity global level and optparse option.
Added sensor_type, check nargs and improved vprint
Added all sensons to optparse.
Added default w/c. Added OID and basic snmpget.

W/C levels are set to their final, default or not, values in the option parser section.
Added sensors OIDs and implemented basic snmp query.
Code clean up. Sensor data, name and units snmpget
Completed individual sensors checks and output.
Cleanup. Option check bug corrected. Better output

- General code cleanup as by pep8 & pylint
- Corrected bug when checking for None warning/critical command
line options.
- Added better output to contact/water checks.
- Removed performance output for contact/water checks.
Split main() in various functions.
Code syntax cleanup.
All sensors implemented and more.

- Loop over all sensors if -s all.
- Functions to get default values for every sensor.
- Removed sensor_type variable.
Added -d option and defaults printing.
Added all checks to enviromux.cfg
Added doc about pnp4nagios integration.
Created nagios folder for nagios stuff.
Doc updated.

Añadido fichero enviromux.cfg y explicación de la configuración de
nagios y pnp4nagios.
refactor check_enviromux to check_enviromux_mini.