Bugfix: missing to check the failure of some tests.
Rename function name `lazy-vector' to `ruby-lazy'.
Add function `readlines'.
Add function `readchars'.
Change: `readline' function does not include `carriage return' code.
Bugfix: srfi-1's `for-each' function and `map' function is not the same definition.
Bugfix: another fix for Enumerator::Lazy.
Bugfix: Enumerator::Lazy does not exist on Ruby-1.9.3.
Rename function `ruby-lazy-enabled-platform' to `ruby-lazy-enabled-platform?'
Add jruby platform to travis-ci config file.