Migrate co-op pages from old site

I ran `ruby migrate_coop_pages.rb` in `scripts`. There will need to be
some manual tidying up of the generated `.md` files under `_coops` but
I think this is a good start. As a one-off it doesn't warrant the time
it would take to improve the migration script.

_coops/aptivate.md

@@ -0,0 +1,37 @@
+---
+title: Aptivate
+name: Aptivate
+website: http://aptivate.org/
+email: outreach@aptivate.org
+twitter: aptivateuk
+github: 
+telephone: +44 (0)1223 967838
+address: 25 Signet Court, Swann's Road, Cambridge,United Kingdom,CB5 8LA
+latitude: 52.21427610000001
+longitude: 0.15076890000000276
+clients:
+- e-immigrate
+- ippf
+- leds-gp
+- mapaction
+- world-bank
+services:
+- business-systems
+- consultancy
+- database-solutions
+- development
+- hosting
+- rapid-application-development
+- strategy
+- user-research
+- web-design
+technologies:
+- django-2
+- docker
+- javascript
+- php
+- python-2
+---
+
+Aptivate is a UK based NGO that provides IT services for international development. We believe in the power of knowledge and communication to alleviate poverty, suffering and conflict, and in the right of every individual to inform and be informed. We are dedicated to developing ICT services that facilitate communication for unconnected communities, empowering ordinary people across the developing world to improve their lives.
+Please see http://aptivate.org/en/about/ for more information.