Refine build.ps1 (#768)
Refine build.ps1 (#768)


928PJY/docfx,hellosnow/docfx,hellosnow/docfx,dotnet/docfx,dotnet/docfx,928PJY/docfx,hellosnow/docfx,dotnet/docfx,DuncanmaMSFT/docfx,LordZoltan/docfx,LordZoltan/docfx,928PJY/docfx,pascalberger/docfx,superyyrrzz/docfx,DuncanmaMSFT/docfx,LordZoltan/docfx,superyyrrzz/docfx,LordZoltan/docfx,pascalberger/docfx,superyyrrzz/docfx,pascalberger/docfx