adding 4.1 docs
updating getting started and finishing a basic blog
upgraded testing to 4.1
updated admin and markdown to rails 4.1
updating understanding migrations to 4.1
upgrading assests and errors to 4.1
fixing some incorrect links
wrap markdown for legibility
removing deprecated spec syntax
swicth to 1.9 hash syntax
updating routes files to rails 4 style
porting 4.1 update to 4.0
updating guides layout
remove links to gists from guides for 4.0 and 4.1
updating rspec tests in line with new rspec 3 syntax
Merge pull request #26 from reinteractive-open/feature/rails_4_update

Feature/rails 4 update