updated ReadMe for macosx users
print statement deprecated incompatible with 3.0+
Macosx Notes typo
Merge pull request #132 from uwecerron/master

print statement deprecated incompatible with 3.0+ and Macosx additional notes
Merge pull request #133 from jimmysong/129

Issue #129: Added run.py for server code.
Issue #129: Add client side for chroma server processing

* Changed up AidedColorDataBuilder to subclass BasicColorDataBuilder instead of FullScanColorDataBuilder
* Changed color.py to use ThinColorData/AidedColorDataBuilder/ChromaBlockchainState based on a key (for now default)
* Added chroma.py in services as the client to a chroma server (note prefetch isn't used yet)
* Added web.py to the setup.py
* Changed run.py on the server to be a little cleaner