Add tests for examples

Update version to 0.5.4

Update version to 0.5.3

Update release version to 0.5.2

Update version to 0.5.1

Add details about directory structure of custom logic adapter

Update Python packaging

Remove the 'no_logic' adapter. It isn't documented or used anywhere.

Add .eggs to gitignore

Merge pull request gunthercox#361 from gunthercox/nltk

Clean up nltk-based language utils and tests