Add stillwater and other adopters.

README.md

@@ -112,6 +112,9 @@ Adopters
 |  National Institutes of Health         | <img src="https://www.nih.gov/sites/default/files/styles/featured_media_breakpoint-large/public/about-nih/2012-logo.png" width="100"> | [github/NIHOPA](https://github.com/NIHOPA/pipeline_word2vec)|   Processing grants and publications with word2vec
 |  Codeq LLC         | <img src="https://codeq.com/wp-content/themes/codeq/assets/img/logo.svg" width="100"> | [codeq.com](https://codeq.com)|   Document classification with word2vec
 | Mass Cognition     | <img src="http://static1.squarespace.com/static/5637b16ee4b050255657c537/t/56a683bf9cadb6bf86a0ea13/1461016648294/?format=1500w" width="100"> | [masscognition.com](http://www.masscognition.com/)                                  | Topic analysis service for consumer text data and general text data |
+| Stillwater Supercomputing     | <img src="http://www.stillwater-sc.com/img/stillwater-logo.png" width="100"> | [stillwater-sc.com](http://www.stillwater-sc.com/)                                  | Document comprehension and association with word2vec |
+| Channel 4     | <img src="http://www.channel4.com/static/info/images/lib/c4logo_2015_info_corporate.jpg" width="100"> | [channel4.com](http://www.channel4.com/)                                  | Recommendation engine |
+| Amazon     |  <img src="http://g-ec2.images-amazon.com/images/G/01/social/api-share/amazon_logo_500500._V323939215_.png" width="100"> | [amazon.com](http://www.amazon.com/)                                  |  Document similarity|
 
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