Created RoR skeleton for the mini-blog application

Signed-off-by: Wainer S. Moschetta <wainersm@linux.vnet.ibm.com>
Created welcome controller

Also created an index action and changed routes properly.

Command:
$ bin/rails generate controller welcome index

Signed-off-by: Wainer dos Santos Moschetta <wainersm@gmail.com>
Created model-view-controller for new Articles use case

Generated Articles controller and New action with command:
$ bin/rails generate controller articles new

Generated Article model with command:
$ bin/rails generate model Article title:string text:text

Added validations to Article model and new action

Signed-off-by: Wainer dos Santos Moschetta <wainersm@gmail.com>
Created "show" and "list" actions of articles controller

Signed-off-by: Wainer dos Santos Moschetta <wainersm@gmail.com>
Create "destroy" action of articles controller

Signed-off-by: Wainer dos Santos Moschetta <wainersm@gmail.com>
Created "Comment" model

Also setled navigational directions from comment to article (vice-versa)

Used command:
$ bin/rails generate model Comment commenter:string body:text article:references

Signed-off-by: Wainer dos Santos Moschetta <wainersm@gmail.com>
Created comments controller

Also created partial render forms

Command:
$ bin/rails generate controller Comments

Signed-off-by: Wainer dos Santos Moschetta <wainersm@gmail.com>