Update README.md

Added ASMALLWORLD to 'Her IRL' section.
Fix data cache on model for associations, fixes #248
Merge pull request #240 from asmallworldsite/master

Update README.md
Merge pull request #263 from ninech/cache_associations

Fix data cache on model for associations, fixes #248
Merge branch 'master' into deligate_empty

* master:
  Fix data cache on model for associations, fixes #248
  Update README.md

Conflicts:
	lib/her/model/associations/association.rb
	spec/model/associations_spec.rb