Add a section on how to install the library using Homebrew
Add a section on how to install the library using Homebrew

Thanks to @ortho for adding C++ Format support to Homebrew.
wangshijin/cppformat,nelson4722/cppformat,lightslife/cppformat,blaquee/cppformat,blaquee/cppformat,alabuzhev/fmt,alabuzhev/fmt,lightslife/cppformat,seungrye/cppformat,Jopie64/cppformat,lightslife/cppformat,alabuzhev/fmt,dean0x7d/cppformat,blaquee/cppformat,nelson4722/cppformat,wangshijin/cppformat,Jopie64/cppformat,seungrye/cppformat,cppformat/cppformat,cppformat/cppformat,dean0x7d/cppformat,mojoBrendan/fmt,mojoBrendan/fmt,cppformat/cppformat,dean0x7d/cppformat,nelson4722/cppformat,Jopie64/cppformat,mojoBrendan/fmt,seungrye/cppformat,wangshijin/cppformat