update mongoid to 3.1

Gemfile.lock

@@ -1,32 +1,32 @@
 PATH
   remote: .
   specs:
-    streama (0.3.6)
-      mongoid (~> 3.0.0)
+    streama (0.3.7)
+      mongoid (~> 3.1.0)
 
 GEM
   remote: http://rubygems.org/
   specs:
-    activemodel (3.2.9)
-      activesupport (= 3.2.9)
+    activemodel (3.2.13)
+      activesupport (= 3.2.13)
       builder (~> 3.0.0)
-    activesupport (3.2.9)
-      i18n (~> 0.6)
+    activesupport (3.2.13)
+      i18n (= 0.6.1)
       multi_json (~> 1.0)
     builder (3.0.4)
     coderay (1.0.8)
     database_cleaner (0.8.0)
     diff-lcs (1.1.3)
     i18n (0.6.1)
     method_source (0.8.1)
-    mongoid (3.0.13)
-      activemodel (~> 3.1)
-      moped (~> 1.1)
+    mongoid (3.1.2)
+      activemodel (~> 3.2)
+      moped (~> 1.4.2)
       origin (~> 1.0)
       tzinfo (~> 0.3.22)
-    moped (1.3.0)
-    multi_json (1.3.7)
-    origin (1.0.10)
+    moped (1.4.3)
+    multi_json (1.7.1)
+    origin (1.0.11)
     pry (0.9.10)
       coderay (~> 1.0.5)
       method_source (~> 0.8)
@@ -41,7 +41,7 @@ GEM
       diff-lcs (~> 1.1.2)
     rspec-mocks (2.6.0)
     slop (3.3.3)
-    tzinfo (0.3.35)
+    tzinfo (0.3.37)
 
 PLATFORMS
   ruby

streama.gemspec

@@ -18,7 +18,7 @@ Gem::Specification.new do |s|
   s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
   s.require_paths = ["lib"]
 
-  s.add_dependency("mongoid", "~> 3.0.0")
+  s.add_dependency("mongoid", "~> 3.1.0")
 
   s.add_development_dependency "rspec", "~> 2.5"
   s.add_development_dependency "database_cleaner", "~> 0.8"