DOC Corrected support version of Python
MINOR Added options for screen width and height
REFACTORING Return exit code in exception handling

Lets use all capabilities of 'finally' statement and return exit code directly from exception handling block.
DOC Described new options.
MINOR Add basic usage and version.
DOC Added description of '--version' option
Merge branch 'master' of https://github.com/alkurbatov/trolls