Add syntax highlighting to README.md.
Merge pull request #22 from kaleworsley/readme_syntax_highlighting

Add syntax highlighting to README.md
Put .gitignore in alphabetical order
Ready for Rails 4?
Updated required Ruby and Rails versions
Updated bundle
Show build status image for this branch
Show build status image for this branch
Added remark about rails4 branch
Updated bundle
Secret token should be secret
Double quotes instead of single quotes inside span tag
Added config/initializers/secret_token.rb to .gitignore
Added install script that creates and migrates database and creates secret_token.rb file
Updated bundle
Fixed typo in README.md
Fixed typo in README.md
Changed error text for confirmation field
Added section about upgrading to Rails 4
Changed title og upgrade section