Clean up before full build.

All of the updates accompanying the 2020.04 release.

- Orxporter 0.4.2 required.
- Mutant Standard 2020.02 changes and improvements.
- All build scripts are now .sh for easy use across different OSes.
- Readme improved to keep requirements in one single place.
- Capitalised all instances of Forc and Orxporter in the readme.

- Readme link errors (a forc link was going to orxporter)
- Latest orxporter version is finally the upstream one again! Links have been changed to reflect this.

Noticed that the download page used in the readme is a very old one. Fixed that.

Forgot to make it clear in all relevant places of the readme that Dzuk's fork of Orxporter is currently required.

- Mutant Standard 0.4.1 emoji and manifests.
- Building requires a later version of Orxporter, currently only available on Dzuk's fork (https://github.com/dzuk-mutant/orxporter).

>.>'

Font manifests aren't meant to be here atm and they contain UUIDs (*screaming internally*).

Links to orxporter were both broken and missing! I'm tired. It's fixed.

Whoops, .DS_Store!

Initial commit containing all of the build files for Mutant Standard 0.3.1.