Fixed an error in read_from
… maximum possible
Improved #read, fixed Gemfile and version.rb added to library when loaded
get IO::Buffer::VERSION in runtime. - iobuffer.c now creates iobuffer/iobuffer_ext.so extension which is loaded by iobuffer.rb.
…extension is compiled! - Improved #read method (empty string is returned if buffer is empty)
Do not trigger a BUG when reading zero bytes from a handle that's reached EOF
…or if larger sizes are used