To download and install, evaluate the following code snippet:
SourceManager default fileIn: (URLMonLibrary default urlDownloadToCacheFile: 'https://raw.githubusercontent.com/rko281/GitHub/master/install.st')

OR Download the repository to your Dolphin working directory and install the package GitHub Packages (this will load all required prerequisite packages)

To download and install a package from GitHub evaluate:

GitHubPackageManager install: '<github username>/<repository name>/<package path>'

Example:

GitHubPackageManager install: 'rko281/MethodSpies/Method Spies'

Package name can be omitted where it matches the repository name:

GitHubPackageManager install: 'rko281/MethodSpies'

Any required prerequisite packages will also be downloaded (this includes prerequisites from other repositories where these can be located)