Update installing-the-cli.md

The previous update made the textual description for Windows unreachable and just referenced a Microsoft article about determining whether you have a 32-bit or 64-bit OS. I would have thought there were easier ways (will have a look when I get the chance). Have added back a link to the textual description.
Merge pull request #78 from Dangthrimble/patch-3

Update installing-the-cli.md
Tweak CLI installation docs
Remove confusing duplication in mac CLI page
Update Windows instructions to reflect ZIP packaging
Merge pull request #82 from LegalizeAdulthood/windows-zip

Update Windows instructions to reflect ZIP packaging
Update installing-the-cli-on-windows.md

Instructions updated for the new Zip file format and to provide more information for determining which version of the file to download and which path variable to update.
Merge pull request #83 from Dangthrimble/patch-4

Update installing-the-cli-on-windows.md
Add documentation for installing CLI using Chocolatey on Windows
Merge pull request #81 from Spinarooni/chocolatey
Delete duplicate header
Add proxy for windows
Tweak type colors, temporarily