Changed top level require file to loader from setup
Added Token class in tokens.rb - Now the lexer produces token objects instead of array of tokens
Added more attr_accessors for line , value and column no. also added line no to parsed_token array
improved the pretty inspect
Improved test tokenizer pretty inspect to observe tokens"
"
Added a rake task to test parser
Updated Io::IOError::SyntaxError::ParseError for determining errors in parser
Updated Io::IOError::SyntaxError::ParseError for determining errors in parser
Added if to reserved keywords
Added if to reserved keywords
Updated a new test in lexer to test lookahead and read token method