Add GNU/Linux example

* Update example/readme.markdown to include GNU/Linux example.

* Add precompiled syro_volcasample_exsample.x86_64 for x86_64
  architecture, also included "02 Kick 3.wav" sample.

* Add makesyro_gnulinux.sh script, for both interactive and
  non-interactive usage.
Merge pull request #2 from avtobiff/gnu-linux-example

Thank you for your work!
Our staff will add file for x86.