Added Rakefile to project for handling common tasks

Rakefile

@@ -0,0 +1,18 @@
+require 'sequel'
+require 'sqlite3'
+
+namespace :db do
+  task :migrate do
+    %x{sequel -m 'db/migrations/' 'sqlite://data/raven.db'}
+  end
+end
+
+namespace :server do
+  task :dev do
+    %x{ruby raven.rb}
+  end
+
+  task :reload do
+    %x{rerun --no-notify 'ruby raven.rb'}
+  end
+end