Removed benchmarks for entities

(as the entities themselves have been removed)
added whiteline for consistency
Removed section about entities from readme
Merge pull request #14 from Factlink/feature/remove-entities-from-readme

Removed entities from readme
Merge pull request #13 from Factlink/feature/remove-entity-benchmarks

Removed benchmarks for entities
removed benchmark from rake file
Merge remote-tracking branch 'factlink/develop'

Conflicts:
	README.md