Update gems to latest versions, add explicit gemfiles to repo, and add .travis.yml

.gitignore

@@ -4,4 +4,4 @@ Gemfile.lock
 pkg/*
 spec/log
 spec/tmp
-gemfiles
+gemfiles/*.lock

.travis.yml

@@ -0,0 +1,16 @@
+services: mongodb
+rvm:
+  - 1.9.2
+  - 1.9.3
+  - 2.0.0
+gemfile:
+  - gemfiles/rails30.gemfile 
+  - gemfiles/rails31.gemfile 
+  - gemfiles/rails32.gemfile 
+  - gemfiles/rails4.gemfile 
+matrix:
+  exclude:
+    - rvm: 1.9.2
+      gemfile: gemfiles/rails32.gemfile 
+    - rvm: 1.9.2
+      gemfile: gemfiles/rails4.gemfile 

Appraisals

@@ -1,16 +1,16 @@
 appraise "rails30" do
-  gem "rails", "3.0.15"
+  gem "rails", "3.0.20"
   gem "sqlite3"
 end
 
 appraise "rails31" do
-  gem "rails", "3.1.6"
+  gem "rails", "3.1.12"
   gem "mongoid"
   gem "sqlite3"
 end
 
 appraise "rails32" do
-  gem "rails", "3.2.6"
+  gem "rails", "3.2.14"
   gem "mongoid"
   gem "sqlite3"
 end

gemfiles/rails30.gemfile

@@ -0,0 +1,8 @@
+# This file was generated by Appraisal
+
+source "http://rubygems.org"
+
+gem "rails", "3.0.20"
+gem "sqlite3"
+
+gemspec :path=>"../"

gemfiles/rails31.gemfile

@@ -0,0 +1,9 @@
+# This file was generated by Appraisal
+
+source "http://rubygems.org"
+
+gem "rails", "3.1.12"
+gem "mongoid"
+gem "sqlite3"
+
+gemspec :path=>"../"

gemfiles/rails32.gemfile

@@ -0,0 +1,9 @@
+# This file was generated by Appraisal
+
+source "http://rubygems.org"
+
+gem "rails", "3.2.14"
+gem "mongoid"
+gem "sqlite3"
+
+gemspec :path=>"../"

gemfiles/rails4.gemfile

@@ -0,0 +1,8 @@
+# This file was generated by Appraisal
+
+source "http://rubygems.org"
+
+gem "rails", "4.0.0"
+gem "sqlite3"
+
+gemspec :path=>"../"