Example Chords project

This is a bare-bones example project that demonstrates two main features of the Chords library:

• Generating printable PDF document with song lyrics.
  For source code, see song_to_pdf.php. For example of the generated PDF file, see okor.pdf.

• Exporting chord diagram as an SVG image.
  For source code, see chord_to_svg.php. For example of the generated image, see C.svg.

The song used in this example is a Czech folk song “Okoř”.