Change database backend to PostgreSQL

* Bundle pg gem
* Add a database config file sample

.gitignore

@@ -1,4 +1,4 @@
 .bundle
-db/*.sqlite3
+config/database.yml
 log/*.log
 tmp/

Gemfile

@@ -2,7 +2,7 @@ source 'http://rubygems.org'
 
 gem 'rails', '3.0.9'
 
-gem 'sqlite3'
+gem 'pg'
 
 gem 'haml'
 

Gemfile.lock

@@ -79,6 +79,7 @@ GEM
       treetop (~> 1.4.8)
     mime-types (1.16)
     nokogiri (1.5.0)
+    pg (0.11.0)
     polyglot (0.3.1)
     rack (1.2.2)
     rack-mount (0.6.14)
@@ -123,7 +124,6 @@ GEM
       json_pure
       rubyzip
     spork (0.9.0.rc9)
-    sqlite3 (1.3.3)
     term-ansicolor (1.0.5)
     thor (0.14.6)
     treetop (1.4.9)
@@ -145,8 +145,8 @@ DEPENDENCIES
   guard-rspec
   guard-spork
   haml
+  pg
   rails (= 3.0.9)
   rb-inotify
   rspec-rails
   spork (~> 0.9.0.rc)
-  sqlite3

config/database.yml

@@ -1,25 +0,0 @@
-# SQLite version 3.x
-#   gem install sqlite3
-development:
-  adapter: sqlite3
-  database: db/development.sqlite3
-  pool: 5
-  timeout: 5000
-
-# Warning: The database defined as "test" will be erased and
-# re-generated from your development database when you run "rake".
-# Do not set this db to the same as development or production.
-test: &test
-  adapter: sqlite3
-  database: ':memory:'
-  pool: 5
-  timeout: 5000
-
-production:
-  adapter: sqlite3
-  database: db/production.sqlite3
-  pool: 5
-  timeout: 5000
-
-cucumber:
-  <<: *test

config/database.yml.sample

@@ -0,0 +1,20 @@
+common: &common
+  adapter: postgresql
+  encoding: unicode
+  pool: 5
+  username: scube
+
+development:
+  <<: *common
+  database: scube_development
+
+test: &test
+  <<: *common
+  database: scube_test
+
+production:
+  <<: *common
+  database: scube_production
+
+cucumber:
+  <<: *test