Added npm package file

package.json

+{
+    "name": "eac-validator",
+    "version": "1.0.0",
+    "description": "SNAC EAC-CPF validation assets, including Relax-NG and Schematron files.",
+    "homepage": "http://gitlab.iath.virginia.edu/snac/eac-validator",
+    "license": "BSD-3-Clause",
+    "contributors": {
+        { "name": "Robbie Hott",
+          "email": "jh2jf@virginia.edu",
+          "url": "http://www.cs.virginia.edu/~jh2jf" },
+        { "name": "Tom Laudeman",
+          "email": "twl8n@virginia.edu",
+          "url": "" },
+        { "name": "Mike Rush",
+          "email": "",
+          "url": "" }
+    }, 
+    "files" : {
+        "schematron",
+        "rng"
+    }
+}