added pry to gemfile so I can investigate objects directly

you have what you need already...I can login to your app with twitter and I can see your object....do a git pull on this to get the pry-rails gem...then bundle install....next run the app, login ...the app will seem to "hang"...switch over to iterm and you will see something like this...(note this is my twitter handle inside your current user object)

```
    20: 				<%= link_to "Sign in with Twitter", "auth/twitter" %>
    21: 			<% end %>
    22: <%= yield %>
    23:
    24: <%= current_user %>
 => 25: <%= binding.pry %>
    26: <ul>
    27:   <li><%= link_to 'USERS', users_path %></li>
    28:   <li><%= link_to 'BUSINESSES', businesses_path %></li>
    29:   <li><%= link_to 'CAMPAIGNS', campaigns_path %></li>
    30: </ul>

[1] pry(#<#<Class:0x007fa28b1038f0>>)> current_user
=> #<User id: 1, name: "thefonso", created_at: "2014-08-29 08:04:39", updated_at: "2014-08-29 08:04:39", provider: "twitter", uid: "40273641", location: "", description: "Predilections towards Science. Technomage. Mr. Rus...", image: "http://pbs.twimg.com/profile_images/2825468445/2a4...">
[2] pry(#<#<Class:0x007fa28b1038f0>>)>

```
everything is crazy simple at this point...