Change ruby to Ruby where appropriate
Merge pull request #19 from lucapette/tweak-ruby-in-01

Change ruby to Ruby where appropriate
Merge pull request #18 from rosstimson/master

Adding link to learn more about Ruby blocks in Chp2
Change the pdf generation command - thanks to Edwin Meyer
Merge pull request #20 from lucapette/tweak-ruby-in-01
Don't track epub files
Verbose output for rake commands + epub fix
More verbose output for the hello-world example
App is now the shortcut for application
More precise description of the directory structure
- Add vim modaline settings (better editing for contributors
- made two CR after and before every code example
- formated the text
- cleanup of link alt attributes
Renamed my job-board to job vacancy
- Moved the section for creating models after the basic crafting of the app
- Removed mocha for stubbing => will use rspec-mock instead
Goodbye git section - will add it later
Get rid of git in section about basic layout
Explained bundle exec and renamed sections
Headlines in first chapter capitalized
Reworked chapter about creating the first index.html page
Explain the function of a router with the help of a vending machine
Described controller creation and parts of the controller in more detail