Raspisump

- new instructions and configuration for local web server.

- sensor module removed from raspisump and now uses hcsr04sensor library.
- numerous changes to raspisump.conf
- added unit variable
- changed critical_distance to critical_water_level
- added better explanations of variables
- changes to reading.py to add metric and imperial parameters sent to hcsr04sensor
- changes to setup.py
- add instructions for setting up a local webserver on your Pi for chart viewing
- add rsumpwebchart.py in bin folder to create a webchart from the command line or cron
- add webchart.py module to create charts for web viewing on Pi local webserver (called from rsumpwebchart.py)

- Bug fix to address the change in RPi.GPIO 0.5.11 as follows;
'GPIO.cleanup() unsets the current pin mode'
This version of Raspi-Sump is compatible with RPi.GPIO 0.5.11

- Additional explanation on raspisump.conf
- Documentation changes

- Add option to send alerts to multiple recipients
- Change to raspisump.conf

First non beta release.
Small changes to install instructions.