Ruby 2.2.2 の上で Rails 4.2.1 を動かす(RubyInstaller for Windows 編) ref: http://qiita.com/akaneko3/items/247af28abded3b3d3617

file0.txt

> gem install sqlite3 --platform=ruby -- --with-sqlite3-include=C:/temp/sqlite3 --with-sqlite3-lib=C:/temp/sqlite3
> gem install sqlite3

file1.txt

> mkdir C:\Ruby\lib\ruby\gems\2.2.0\gems\sqlite3-1.3.10-x64-mingw32\lib\sqlite3\2.2
> cp C:\Ruby\lib\ruby\gems\2.2.0\extensions\x64-mingw32\2.2.0\sqlite3-1.3.10\sqlite3\sqlite3_native.so C:\Ruby\lib\ruby\gems\2.2.0\gems\sqlite3-1.3.10-x64-mingw32\lib\sqlite3\2.2
> cp C:\temp\sqlite3\sqlite3.dll C:\Ruby\bin

file2.txt

> cp C:\temp\bin\*.dll C:\temp\lib

file3.txt

> gem install nokogiri --platform=ruby -- --use-system-libraries --with-iconv-include=C:/temp/include --with-iconv-lib=C:/temp/lib --with-xml2-include=C:/temp/include/libxml2 --with-xml2-lib=C:/temp/lib --with-xslt-include=C:/temp/include --with-xslt-lib=C:/temp/lib
> gem install nokogiri

file4.txt

> mkdir C:\Ruby\lib\ruby\gems\2.2.0\gems\nokogiri-1.6.6.2-x64-mingw32\lib\nokogiri\2.2
> cp C:\Ruby\lib\ruby\gems\2.2.0\extensions\x64-mingw32\2.2.0\nokogiri-1.6.6.2\nokogiri\nokogiri.so C:\Ruby\lib\ruby\gems\2.2.0\gems\nokogiri-1.6.6.2-x64-mingw32\lib\nokogiri\2.2
> cp C:\temp\lib\*.dll C:\Ruby\bin