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

Update requirements.

Update Django settings documentation.

Updated release version to 0.4.8

Merge pull request gunthercox#268 from davizucon/most_frequent_respon…

…se-fix

Fix arguments (+input_statement, statement_list) for most_frequent_re…

Update release version.