Merge pull request #10 from sparkfun/release/v02.02.00

Release/v02.02.00

add version qualifier on toolkit dependancy; bumped version

Merge pull request #5 from sparkfun/fix#4

Update sfeAS7331.cpp

Merge pull request #3 from sparkfun/work

Make setting device address actually do something.

Return from isConnected if not connected.

Merge pull request #2 from sparkfun/work

Refactor library.

Make v1.0.0 ready for arduino library registry.