Update package files & metadata

.editorconfig

@@ -0,0 +1,14 @@
+# http://editorconfig.org
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 2
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.md]
+indent_size = 4
+trim_trailing_whitespace = false

.gitattributes

@@ -0,0 +1,6 @@
+* text=auto
+
+# Reviewing the lockfile contents is an important step in verifying that
+# we're using the dependencies we expect to be using
+package-lock.json linguist-generated=false
+yarn.lock linguist-generated=false

.gitignore

@@ -2,6 +2,8 @@ node_modules
 .DS_Store
 package-lock.json
 
+*.tgz
+
 # TypeScript
 /build
 **/*.d.ts

package.json

@@ -3,9 +3,15 @@
   "version": "2.5.2",
   "description": "A few useful functions for signing ethereum data",
   "main": "index.js",
+  "files": [
+    "index.js",
+    "index.d.ts",
+    "utils/"
+  ],
   "scripts": {
     "build": "tsc --project .",
-    "test": "npm run build && node test/index.js"
+    "test": "npm run build && node test/index.js",
+    "prepublishOnly": "npm run build"
   },
   "repository": {
     "type": "git",