Go client: add generated client library.

Command line to generate:

google-api-go-generator -publiconly=false -api=genomics:v1beta

where the generator is a part of https://code.google.com/p/google-api-go-client/
Add missing import, remove bad spaces

Part of #30
Merge pull request #31 from gkrasin/add-generated-lib

Go client: add generated client library.
Clean up package installation process, and provide sessionInfo in README
Put generic placeholders back
Merge pull request #32 from siddharthab/master

Clean up package installation process, and provide sessionInfo in README