Initial skeleton and gravatar
Added gem brcypt for password hashing
Updated user_helper to include bcrypt hashing features
Created models person, product, quote, products_quote and the related tables.
Renamed hash_helpr into user_helper -cf previous commit-
Added sign up page, user controller and helpers.

db/migrate/20130515142837_create_users.rb : change username to name, added password hash

app/models/user.rb : added password hashing methods

app/controllers/user.rb : added routes for sign logout and signup

app/helpers/user_helper.rb : added methods to find single user and check presence

app/views/layout.erb
app/views/sign_in.erb
app/views/sign_up.erb : create views for signup and sign, basics

app/views/layout.erb : added user.js to the list

public/js/user.js : added check existence in DB methods