Use tilde prefix for nickname only in profile url

app/decorators/asciicast_decorator.rb

@@ -79,7 +79,7 @@ class AsciicastDecorator < ApplicationDecorator
     if user
       user.nickname
     elsif model.username
-      "~#{model.username}"
+      model.username
     else
       'anonymous'
     end

app/decorators/user_decorator.rb

@@ -1,9 +1,5 @@
 class UserDecorator < ApplicationDecorator
 
-  def nickname
-    "~#{model.nickname}"
-  end
-
   def asciicasts_count
     model.asciicasts.count
   end

app/mailers/user_mailer.rb

@@ -8,7 +8,7 @@ class UserMailer < ActionMailer::Base
     @asciicast = AsciicastDecorator.new(@comment.asciicast)
 
     user = UserDecorator.new(user)
-    to = "~#{user.nickname} <#{user.email}>"
+    to = "#{user.nickname} <#{user.email}>"
     subject = %(New comment for #{@asciicast.title})
     mail :to => to, :subject => subject
   end

spec/decorators/asciicast_decorator_spec.rb

@@ -179,7 +179,7 @@ describe AsciicastDecorator do
         asciicast.username = 'foo'
       end
 
-      it { should == '~foo' }
+      it { should == 'foo' }
     end
 
     context 'when no user nor username present' do

spec/features/session_spec.rb

@@ -15,7 +15,7 @@ feature "User session" do
 
     expect(page).to have_content('Logged in!')
     within('header') do
-      expect(page).to have_link('~foobar')
+      expect(page).to have_link('foobar')
     end
   end
 
@@ -29,7 +29,7 @@ feature "User session" do
 
     expect(page).to have_content('Logged in!')
     within('header') do
-      expect(page).to have_link('~hasiok')
+      expect(page).to have_link('hasiok')
     end
   end
 

spec/features/user_spec.rb

@@ -8,7 +8,7 @@ feature "User's profile" do
   scenario 'Visiting' do
     visit profile_path(user)
 
-    expect(page).to have_content(/Asciicasts by ~#{user.nickname}/i)
+    expect(page).to have_content(/Asciicasts by #{user.nickname}/i)
     expect(page).to have_content('1 asciicasts')
     expect(page).to have_link('Tricks!')
     expect(page).to have_selector('.supplimental .play-button')