Implemented any printable character usage in node label
Added root node creation
Version is updated to 0.02
Added argument parsing
Added option of automatic rendering of the output
Added short option for '--render'
Fixed coding style issues
Fixed the issue of not returning of the 'dot' calling
Removed choose_binary() function
Removed unnecessary print
Style issues are fixed
Main file renamed to cdb.py
README was updated
Changed name in main script.
Label is encoded to UTF8 for Python3 comaptibility
Auto-rendering feature was removed until it will be fixed