Better Way to Generate Rails Application

Generate project with RMV.

$ mkdir myapp                                                           # create the project folder

$ cd myapp

$ rvm use ruby-2.1.1@myapp --ruby-version --create     # create a new project-specific gemset

                                                                                 # option “—ruby-version” creates .ruby-version and .ruby-gemset files in the root directory

$ gem install rails --pre                                                # installs the most recent release of Rails 

$ rails new .                                                               # generate application in the current directory.

Click here is you want to create an app without database and test-unit

If you have no RVM in your system, follow command below.  

$ \curl -L https://get.rvm.io | bash -s stable --ruby        # install rvm and ruby

$ rvm get stable --autolibs=enable                              # if you have rvm already, update it

$ rvm install ruby                                                      # install Ruby

$ rvm --default use ruby-2.1.1                                    # use and set it as default

$ gem update --system                                             # update gem

From http://railsapps.github.io/installrubyonrails-mac.html