Update README.md:

* including the compilation instruction for Visual Studio 2017;
* Add a link to the user manual repository;
3 jobs for dev_floatstep in 4 minutes and 13 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Build
passed build_ubuntu #69182
ci-ubuntu

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passed build_x64 #69181
vind-pone-ci02

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passed build_x86 #69180
vind-pone-ci02

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