Add categories selector on page#new
Added Go server scripts
Block can render itself
Updated JSON API structure
Added spec dir for CI build
Added db config for CI
Don't load pry-rails in application.rb

It's not available in all environments (if any)
Use regular database.yml for CI database
Don't schema:load in test script
Added script to build the gem
Search results sorting

1. Terms contained within the Label (H1)
2. Terms contained within the Meta Description
3. Terms contained within the H2
4. Terms contained within the H3
5. Body Text
Touch blockabe polymorphic relationship 

In order to search by Page#updated_at, 
touch Page when the blocks are updated