Compression documentation (#8247)
Compression documentation (#8247)

* Documentation about gzip

* Update packages/next/README.md

Co-Authored-By: Tim Neutkens <5ee0edb9e2229c0838f1959779f1949031de0123@timneutkens.nl>

* Improve docs

* Update packages/next/README.md

Co-Authored-By: Luis Fernando Alvarez D. <faea5242a00c52da62a0f00df168c199b7ab748d@zeit.co>

* Update packages/next/README.md

Co-Authored-By: Luis Fernando Alvarez D. <faea5242a00c52da62a0f00df168c199b7ab748d@zeit.co>

* Update README.md

flybayer/next.js,azukaru/next.js,JeromeFitz/next.js,flybayer/next.js,BlancheXu/test,zeit/next.js,JeromeFitz/next.js,flybayer/next.js,BlancheXu/test,JeromeFitz/next.js,zeit/next.js,azukaru/next.js,JeromeFitz/next.js,azukaru/next.js,zeit/next.js,azukaru/next.js,BlancheXu/test,flybayer/next.js