Remove step #6 in the Basic Setup for Project #2

Unless I'm missing something, this step appears to be redundant.  I could create the validations: 'validates :password, confirmation: true' and 'validates :password_confirmation, presence: true' to check that there is a password_confirmation and that it matches the password  However, this is already taken care of by the addition of #has_secure_password in step #5, as seen in the documentation and example here:   https://www.omniref.com/ruby/gems/activemodel/4.1.6/symbols/ActiveModel::SecurePassword::ClassMethods/has_secure_password
Update project_advanced_building_blocks.md
Update project_oop.md
Update project_file_io.md
Update project_web.md
Update project_recursion.md
Update project_data_structures_algorithms.md
Update project_testing.md
Update project_final.md
Add Tommy Noe's Micro-Reddit solution
Error in routes box

There shouldn't be :id in - post "/posts/:id => "posts#create"  # usually a submitted form
added Ruby Building Blocks solutions
Merge pull request #660 from Rodic/patch-2

Update project_advanced_building_blocks.md
Merge pull request #661 from Rodic/patch-3

Update project_oop.md
Merge pull request #662 from Rodic/patch-4

Update project_file_io.md
Merge pull request #663 from Rodic/patch-5

Update project_web.md
Merge pull request #664 from Rodic/patch-6

Update project_recursion.md
Merge pull request #665 from Rodic/patch-7

Update project_data_structures_algorithms.md
Merge pull request #666 from Rodic/patch-8

Update project_testing.md
Merge pull request #667 from Rodic/patch-9

Update project_final.md