C:\Users\UserName>gem install hologram
Fetching: rouge-1.6.2.gem (100%)
Successfully installed rouge-1.6.2
Fetching: redcarpet-3.1.2.gem (100%)
Building native extensions. This could take a while...
Successfully installed redcarpet-3.1.2
Fetching: hologram-1.2.0.gem (100%)
Successfully installed hologram-1.2.0
Parsing documentation for rouge-1.6.2
Installing ri documentation for rouge-1.6.2
Parsing documentation for redcarpet-3.1.2
unable to convert "\x90" from ASCII-8BIT to UTF-8 for C:/Ruby200-x64/lib/ruby/gems/2.0.0/extensions/x64-mingw32/2.0.0/redcarpet-3.1.2/redcarpet.so, skipping
unable to convert "\x90" from ASCII-8BIT to UTF-8 for lib/redcarpet.so, skipping
Installing ri documentation for redcarpet-3.1.2
Parsing documentation for hologram-1.2.0
Installing ri documentation for hologram-1.2.0
3 gems installed
- Windows7 Pro 64bit
- ruby --versio: ruby 2.0.0p481 (2014-05-08) [x64-mingw32]
- gem --version: 2.4.1
- hologram --version: hologram 1.2.0