* Improve contribute section of readme file
In response to issue #2188, the "Contribute" section of readme.md has been improved. The instructions for Linux, Windows, and macOS have been separated to add clarity to the section in question.
* Slight change on top of readme commit
Change of grammar on one line.
* Removal of npm references from readme update
* Add CircleCI Badge
* Fix typo
* Replace yarn by npm
* Replace yarn by npm
* Always generate the artifacts
* Use yarn for everything
* Also pin dependencies with Yarn
* Install yarn
* Adjusted config
* Only copy ZIP file
* Only build our branches
* Prevent Travis from building on macOS