Upgrade virtualenv pip in Python docgen

Correct shell scripting mistake in node package generation code

grpc_args doxygen docstrings

Also ignore the docgen-generated directories under doc/.

Automatic test that the library builds correctly with frameworks

Remove undefined reference warning in Ruby build

Fix undefined reference in Ruby code, add linker warning

Document the custom grpcio-tools command class

Force the Python host version on Mac OS X

Polish grpcio_health_checking package

Fixed name syntax error

Client and server multiplex example

Fixing Ruby's Rakefile - high version number was hardcoded.

Update examples to GA API

Advance versions from 0.14 -> 1.0.0-pre1

Sort Python imports in setup.py

-Rename namespace to grpc_health->grpc to match spec
-Proper use of NOT_FOUND status code
-Improve testing
-Add source distribution to artifact build

Build Python distributions for Python 3

Yay compatibility and predictability!

Adding UDP server error handling.

Test Python source distribution installation