Fix findbug warnings and refactor the error message.
Merge branch 'master' into findbug
Merge pull request #50 from tonyhuang/findbug

Fix findbug warnings and refactor the error message.
Update README.md

Due to change in behavior and interface changes, Phoenix will not yet run on 0.94.4 or above. In the process of fixing this now.
Suppress findbugs warnings
Added HTableFactory to allow dependent projects to provide different implementations of HTableInterface
Merge pull request #51 from tonyhuang/findbug

Suppress findbugs warnings
Made default HTableFactory a singleton
Merge pull request #52 from aaraujo/htable-provider

Added HTableFactory and Provider