Added ELI to Text Classification Category

[ x ] My submission is formatted according to the guidelines in the contributing guide
[ x ] My addition is ordered alphabetically
[ x ] My submission has a useful description
[ x ] The description does not have more than 100 characters
[ x ] The description does not end with punctuation
[ x ] Each table column is padded with one space on either side
[ x ] I have searched the repository for any relevant issues or pull requests
[ x ] Any category I am creating has the minimum requirement of 3 items
[ x ] All changes have been squashed into a single commit

README.md

@@ -1306,6 +1306,7 @@ API | Description | Auth | HTTPS | CORS |
 | [Aylien Text Analysis](https://docs.aylien.com/textapi/#getting-started) | A collection of information retrieval and natural language APIs | `apiKey` | Yes | Unknown |
 | [Cloudmersive Natural Language Processing](https://www.cloudmersive.com/nlp-api) | Natural language processing and text analysis | `apiKey` | Yes | Yes |
 | [Detect Language](https://detectlanguage.com/) | Detects text language | `apiKey` | Yes | Unknown |
+| [ELI](https://nlp.insightera.co.th/docs/v1.0) | Natural Language Processing Tools for Thai Language | `apiKey` | Yes | Unknown |
 | [Google Cloud Natural](https://cloud.google.com/natural-language/docs/) | Natural language understanding technology, including sentiment, entity and syntax analysis | `apiKey` | Yes | Unknown |
 | [LibreTranslate](https://libretranslate.com/docs) | Translation tool with 17 available languages | No | Yes | Unknown |
 | [Semantria](https://semantria.readme.io/docs) | Text Analytics with sentiment analysis, categorization & named entity extraction | `OAuth` | Yes | Unknown |