Add detail to git install instructions in README (#151) #251

# to view logs

Job	Run time
Build example plugins with CMake and JUCE 6.0.7 on ubuntu-latest	2m 52s
Build example plugins with CMake and JUCE 6.1.5 on ubuntu-latest	2m 57s
Build example plugins with CMake and JUCE 6.1.6 on ubuntu-latest	2m 43s
Build example plugins with CMake and JUCE 7.0.0 on ubuntu-latest	3m 35s
Build example plugins with CMake and JUCE 7.0.6 on ubuntu-latest	3m 29s
Build example plugins with CMake and JUCE 6.0.7 on windows-2019	2m 37s
Build example plugins with CMake and JUCE 6.1.5 on windows-2019	3m 49s
Build example plugins with CMake and JUCE 6.1.6 on windows-2019	3m 54s
Build example plugins with CMake and JUCE 7.0.0 on windows-2019	2m 44s
Build example plugins with CMake and JUCE 7.0.6 on windows-2019	3m 58s
Build example plugins with CMake and JUCE 6.0.7 on macOS-latest	1m 50s
Build example plugins with CMake and JUCE 6.1.5 on macOS-latest	2m 11s
Build example plugins with CMake and JUCE 6.1.6 on macOS-latest	1m 54s
Build example plugins with CMake and JUCE 7.0.0 on macOS-latest	2m 13s
Build example plugins with CMake and JUCE 7.0.6 on macOS-latest	2m 13s
	42m 59s

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