js closureCompiler.run() signature is wrong in README

[leeoniya]

hey @ChadKillingsworth,

const compilerProcess = closureCompiler.run(function(exitCode, stdOut, stdErr) {
  //compilation complete
}, [{
 path: 'file-one.js',
 src: 'alert("hello world")',
 sourceMap: null // optional input source map
}]);

this should be run(fileList, callback) [1] ... and the return value is the compilation artifact out.

i can confirm that google/closure-compiler-js#79 is resolved, btw.

[1] https://github.com/google/closure-compiler-npm/blob/master/lib/node/closure-compiler-js.js#L52

[ChadKillingsworth]

Oh nice catch. I'll correct that.

[ChadKillingsworth]

Fixed by #98