update RailsInstaller versionfor Windows
modify run jekyll command
links to german translation
Merge pull request #205 from railsgirlshh/german

links to german translation
Merge pull request #204 from emorima/master

Update RailsInstaller version for Windows
fix homebrew install url

http://brew.sh/
Merge pull request #206 from kurotaky/update-homebrew-install-url

Fixed installation URL of Homebrew
add chastell beginners guide to Sinatra
Merge pull request #207 from FloorD/master

add chastell's beginners guide to Sinatra
fix formatting issues sinatra guide
Merge pull request #208 from FloorD/master

fix formatting issues sinatra guide
add proper syntax highlight Sinatra starters guide
Merge pull request #209 from FloorD/master

add proper syntax highlight Sinatra starters guide