Add files prop to package.json (#497)

* add files prop to package.json

README.md

@@ -39,6 +39,7 @@ Maintaining this list is a considerable chore, and it is not our highest priorit
 3. Add an entry to the `contract-map.json` file with the specified address as the key, and the image file's name as the value.
 
 Criteria:
+
 - The icon should be small, square, but high resolution, ideally a vector/svg.
 - Do not add your entry to the end of the JSON map, messing with the trailing comma. Your pull request should only be an addition of lines, and any line removals should be deliberate deprecations of those logos.
 - PR should include link to official project website referencing the suggested address.
@@ -64,4 +65,3 @@ Tokens should include a field `"erc20": true`, and can include additional fields
 - decimals (precision of the tokens stored)
 
 A full list of permitted fields can be found in the [permitted-fields.json](./permitted-fields.json) file.
-

package.json

@@ -21,6 +21,11 @@
     "url": "https://github.com/MetaMask/ethereum-contract-icons/issues"
   },
   "homepage": "https://github.com/MetaMask/ethereum-contract-icons#readme",
+  "files": [
+    "index.js",
+    "contract-map.json",
+    "images"
+  ],
   "devDependencies": {
     "ethereumjs-util": "^5.1.1",
     "tape": "^4.6.3"

test/index.js

@@ -105,4 +105,4 @@ test('symbols should not overlap', function (t) {
   const msg = duplicateSymbol ? `found overlapping symbol ${duplicateSymbol}` : 'symbols should not overlap'
   t.notOk(duplicateSymbol, msg)
   t.end()
-})
+})