v1.0.5 - adding SGP30_ as a prefix to SGP30ERR. THIS BREAKS BACKWARD …

…COMPATIBILITY

To avoid compilation errors (conflicts) with other libraries which also use SUCCESS as an enumerated value, it was necessary to prefix the SGP30ERR enum values with SGP30_. SUCCESS becomes SGP30_SUCCESS etc..
Unfortunately this breaks backward compatibility.
If you start to see errors along the lines of SUCCESS is undefined, please use the library manager to select version 1.0.4 of this library.
Sorry about that...

Add wire.begin to example.

Update Example3_Humidity and Version Bump

Updating Example3_Humidity to use the SHTC3 instead of Si7021. Added function to reset humidity value with an updated reading in case users want to have a "live" update to this value.

Library version updated to 1.0.3

Add thanks to in readme. Bump lib ver. touchup ex 3 whitespace.

lib ver roll

added comments