Initial release

• Wit.ai Bot server integrates with Wit.AI flow using specified token
• Wit.ai Bot server integrates with Facebook Messenger API
• Wit.ai Bot server responds to Facebook user queries automatically generating: text (intuitive feedback and jokes), images (i.e. statistical visualisations of datasets)
• Wit.ai Bot server may be set with a "humour percentage" to sustain user engagement, whereby a higher value increases likelihood of any response to be accompanied by a space-related joke
• Wit.ai Bot server queries NASA API Common Metadata Repository (CMR) (which replaces NASA's Earth Observing System (EOS) Clearing House (ECHO))
• Wit.ai Bot server uses the Flask framework and Wit.ai Python SDK to retrieve data in CSV format using NASA ECHO API, build statistical data visualisations using Seaborn, and send these in response to user on Facebook Messenger
• Wit.ai Bot server converts Bot response from text to speech using eSpeak text-to-speech software synthesiser