Set this up to run on CI in the babylon repo?

The issue provides benchmark output but names no files, tests, or entry points. Start by locating the benchmark command and existing CI configuration in the repository, then determine how the recorded parser comparisons should run in CI; done means the benchmark runs reproducibly there with results that can be reviewed.

if anyone wants to do it

--- v7.0.0-beta.49
Node: v8.10.0
ITERATIONS: 20
fixture                         babylon acorn   esprima
./fixtures/backbone.js          11.8ms  5.2ms   8.8ms
./fixtures/jquery.js            56.1ms  20.8ms  37.4ms
./fixtures/babylon-dist.js      71.6ms  28.4ms  61.0ms
./fixtures/angular.js           109.8ms 63.3ms  88.3ms
./fixtures/react-with-addons.js 110.2ms 68.2ms  86.3ms
./fixtures/ember.debug.js       273.9ms 188.1ms 240.3ms

--- v7.0.0-beta.31
Node: v8.9.1
ITERATIONS: 20
fixture                         babylon
./fixtures/backbone.js          19.4ms
./fixtures/jquery.js            82.0ms
./fixtures/babylon-dist.js      101.5ms
./fixtures/angular.js           132.9ms
./fixtures/react-with-addons.js 137.6ms
./fixtures/ember.debug.js       332.3ms

--- v6.18.0
Node: v8.9.1
ITERATIONS: 20
fixture                         babylon
./fixtures/backbone.js          69.7ms
./fixtures/jquery.js            332.6ms
./fixtures/babylon-dist.js      400.0ms
./fixtures/angular.js           554.9ms
./fixtures/react-with-addons.js 478.6ms
./fixtures/ember.debug.js       951.1ms


Node: v8.9.1
ITERATIONS: 20
fixture                         acorn6to5v0.11.1-31 acorn v5  esprima v4
./fixtures/backbone.js          9.9ms  6.6ms   7.0ms
./fixtures/jquery.js            43.4ms  24.1ms  39.5ms
./fixtures/babylon-dist.js      62.5ms 27.9ms  65.7ms
./fixtures/angular.js           89.8ms 83.5ms  102.7ms
./fixtures/react-with-addons.js 87.4ms 88.6ms  97.3ms
./fixtures/ember.debug.js       253.8ms 232.9ms 290.8ms

Node: v8.9.1
ITERATIONS: 20
fixture                         acornv0.10   acorn6to5v0.9.1-16
./fixtures/backbone.js          10.8ms  5.2ms
./fixtures/jquery.js            40.2ms  18.4ms
./fixtures/babylon-dist.js      56.3ms  54.8ms
./fixtures/angular.js           82.3ms  82.5ms
./fixtures/react-with-addons.js 85.3ms  87.7ms
./fixtures/ember.debug.js       234.7ms 254.4ms