function createProgramFromScripts(gl, shaderScriptIds, opt_attribs, opt_locations, opt_errorCallback) {
  var progOptions = getProgramOptions(opt_attribs, opt_locations, opt_errorCallback);
  var shaders = [];

  for (var ii = 0; ii < shaderScriptIds.length; ++ii) {
    var shader = createShaderFromScript(gl, shaderScriptIds[ii], gl[defaultShaderType[ii]], progOptions);

    if (!shader) {
      return null;
    }

    shaders.push(shader);
  }

  return createProgram(gl, shaders, progOptions);
}
Creates a program from 2 script tags.

NOTE: There are 4 signatures for this function

    twgl.createProgramFromScripts(gl, [vs, fs], opt_options);
    twgl.createProgramFromScripts(gl, [vs, fs], opt_errFunc);
    twgl.createProgramFromScripts(gl, [vs, fs], opt_attribs, opt_errFunc);
    twgl.createProgramFromScripts(gl, [vs, fs], opt_attribs, opt_locations, opt_errFunc);

@param {WebGLRenderingContext} gl The WebGLRenderingContext
       to use.
@param {string[]} shaderScriptIds Array of ids of the script
       tags for the shaders. The first is assumed to be the
       vertex shader, the second the fragment shader.
@param {module:twgl.ProgramOptions|string[]|module:twgl.ErrorCallback} [opt_attribs] Options for the program or an array of attribs names or an error callback. Locations will be assigned by index if not passed in
@param {number[]} [opt_locations|module:twgl.ErrorCallback] The locations for the. A parallel array to opt_attribs letting you assign locations or an error callback.
@param {module:twgl.ErrorCallback} [opt_errorCallback] callback for errors. By default it just prints an error to the console
       on error. If you want something else pass an callback. It's passed an error message.
@return {WebGLProgram?} the created program or null if error or a callback was provided.
@memberOf module:twgl/programs