added rubocop, corrected alias_method
corrected  multi-line blocks
corrected  hash braces in method calls
corrected blank lines
corrected blank lines
corrected blank lines
corrected hash syntax new style
corrected method calls
corrected spaces
corrected spaces
corrected spaces
corrected spaces
corrected spaces
corrected quoted strings
corrected spaces
corrected comma
changed rucop settings
added rubocop to guard
added rubocop to travis
small changes