Lots of bug fixes and styling issue fixes

Added

• Python version is checked before running the script

Changed

• Slightly modernize logo

Fixed

• "rasamd" adapter value missing from console help
• Slot value missing in JSONL examples
• Potential error when using random generation modifier (PR #49)
• Crash when having an annotation on a slot or alias
• Potential crash when logging a syntax error
• Usage of deprecated syntax in complex examples
• Incorrect error message when using "rasamd" adapter
• Minor code style issues

Deprecated

• Python versions 2.7 and <= 3.3