Entity Linker

[marfox]

Decide which entity linking service should be supported.
Current list in alphabetical order:

• Alchemy
• Babelfy
• Cogito Intelligence
• Dandelion
• DBpedia Spotlight
• Open Calais
• TagMe
• TextRazor
• The Wiki Machine
• Zemanta

[marfox]

Currently supporting the Dandelion Entity Extraction API via 1db502e .