fix example config file typo of environment
Merge pull request #248 from niedhui/master

fix example config file typo of environment
Make sure to use bytesize instead of size when writing data in the
MiniSSL's write.

@engine.write reports bytes written, not characters written.
Merge pull request #250 from cure/bytesize

Make sure to use bytesize instead of size (MiniSSL write)