added rake to Gemfile so we can actually use the tasks from Rakefile

Author: pekeler

Gemfile

@@ -3,3 +3,4 @@ source 'https://rubygems.org'
 gem 'sinatra', '~> 1.0'
 gem 'shotgun', :group => :reloadable
 gem 'thin', :group => :reloadable
+gem 'rake'

Gemfile.lock

@@ -4,6 +4,7 @@ GEM
     daemons (1.1.0)
     eventmachine (0.12.10)
     rack (1.2.1)
+    rake (10.1.1)
     shotgun (0.8)
       rack (>= 1.0)
     sinatra (1.1.2)
@@ -19,6 +20,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
+  rake
   shotgun
   sinatra (~> 1.0)
   thin