Usage:
  glslify {OPTIONS} < index.glsl

glslify is a Node.js-style module build system, much like
browserify, except for GLSL shaders! It allows you to share
and consume shader code on npm.

Options:
  -t, --transform  Apply a local GLSL source transform to your bundle.
  -o, --output     Specify an output file to write your shader to.
  -v, --version    Output version number
  -h, --help       Display this message.

  Read index.glsl and write to output.glsl:
    glslify index.glsl -o output.glsl

  Alternatively:
    cat index.glsl | glslify > output.glsl

  To use the glslify-hex transform:
    npm install glslify-hex
    glslify index.glsl -t glslify-hex -o output.glsl