Merge pull request #206 from answerdigital/feature/update-docs

Added new vocabulary entry

Author: james-cockayne

docs/database-setup.md

@@ -32,6 +32,7 @@ We use Flyway to patch our database. This script should be run if new database p
 > |142	|	CDM 5	| OPS	| Operations and Procedures Classification (OPS)|
 > |141	|   CDM 5   | Cancer Modifier	| Diagnostic Modifiers of Cancer (OMOP) |
 > |90	    |   CDM 5   |ICDO3 |	International Classification of Diseases for Oncology, Third Edition (WHO) |
+> |82       |   CDM 5   | RxNorm Extension | OMOP RxNorm Extension |
 > |75		|	CDM 5	| dm+d	| Dictionary of Medicines and Devices (NHS)|
 > |71	| CDM 5 | ABMS	 | Provider Specialty (American Board of Medical Specialties)	 |
 > |57	| CDM 5 | HES Specialty	| Hospital Episode Statistics Specialty (NHS) |