Add a more comprehensive .gitignore config
Update to latest patch level for Ruby 1.9.3
Fixes issues with simplecov + spork.

I needed to make some minor changes to the spec_helper.rb file and
restrict simplecov to the 0.7.x branch (there is a bug in the 0.8
branch that has yet to be fixed: https://github.com/colszowka/simplecov

I also took the liberty to update the Gemfile with Ruby19 hash syntax.
Use a content_tag helper for category.description

In category#show the app would throw a NoMethodError on categories with
nil descriptions (this is from db/seeds.rb).  We may also want to add
some example descriptions to the seeds.rb file.
Remove unnecessary comments and fix whitespace
Merge branch 'mass-cleanup'
Merge pull request #6 from 18F/feature/category_description_helper

Use a content_tag helper for category.description
Merge pull request #5 from 18F/feature/fix_simplecov_spork_issues

Fixes issues with simplecov + spork.
Remove dict files associated with 0e85706
Merge pull request #2 from 18F/feature/comprehensive_gitignore

Add a more comprehensive .gitignore config
Merge pull request #3 from 18F/feature/latest_ruby_193

Update to latest patch level for Ruby 1.9.3
Restrict FriendlyID to 4.x branch

For Rails3 compatibilty it's best to use the 4.x stable branch of
FriendlyId. FriendlyId5 is only compatible with Rails4+.

https://github.com/norman/friendly_id/blob/master/README.md