updated Gemfile

Gemfile

@@ -1,14 +1,11 @@
 source "http://rubygems.org"
-# Add dependencies required to use your gem here.
-# Example:
-#   gem "activesupport", ">= 2.3.5"
 
-# Add dependencies to develop your gem here.
-# Include everything needed to run rake, tests, features, etc.
+gem 'rails'
+
 group :development do
-  gem "rspec", "~> 2.8.0"
-  gem "rdoc", "~> 3.12"
-  gem "bundler", "~> 1.0.0"
-  gem "jeweler", "~> 1.8.4"
-  gem "rcov", ">= 0"
+  gem "rspec",    "> 2.8.0"
+  gem "rdoc",     ">= 3.12"
+  gem "bundler",  "> 1.0.0"
+  gem "jeweler",  ">= 1.8.4"
+  gem "simplecov",">= 0.5"
 end