Add example sweep patterns to README #47

Job	Run time
Julia 1.0 - windows-latest - x64	5m 21s
Julia 1.0 - ubuntu-latest - x64	2m 38s
Julia nightly - ubuntu-latest - x64	3m 11s
Julia 1.3 - ubuntu-latest - x64	2m 20s
Julia 1.3 - windows-latest - x64	7m 10s
Julia 1.3 - macOS-latest - x64	6m 51s
Julia 1.0 - macOS-latest - x64	5m 30s
Julia nightly - windows-latest - x64	4m 8s
Julia nightly - macOS-latest - x64	6m 29s
	43m 38s

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