Add Override The Initial Sequence Value as a ruby til.

ruby/override-the-initial-sequence-value.md

@@ -0,0 +1,21 @@
+# Override The Initial Sequence Value
+
+[FactoryGirl sequences](https://github.com/thoughtbot/factory_girl/blob/master/GETTING_STARTED.md#sequences)
+can be defined with an initial starting value
+
+```ruby
+FactoryGirl.define do
+  sequence :email, 1000 do |n|
+    "person#{n}@example.com"
+  end
+end
+```
+
+thus:
+
+```ruby
+> FactoryGirl.generate :email
+=> "person1000@example.com"
+> FactoryGirl.generate :email
+=> "person1001@example.com"
+```