fix(types): ship index.d.ts

resolves #2

Author: macklinu

package.json

@@ -3,6 +3,7 @@
   "version": "0.0.0-development",
   "description": "Danger plugin for Jest",
   "main": "dist/index.js",
+  "types": "dist/index.d.ts",
   "files": [
     "dist"
   ],

src/index.ts

@@ -2,7 +2,7 @@ import * as fs from 'fs'
 
 import { TestFailureFormatter } from './TestFailureFormatter'
 
-interface IPluginConfig {
+export interface IPluginConfig {
   testResultsJsonPath?: string
 }
 

tsconfig.json

@@ -1,5 +1,7 @@
 {
   "compilerOptions": {
+    "declaration": true,
+    "declarationDir": "dist",
     "lib": ["es5", "es2015"],
     "module": "commonjs",
     "moduleResolution": "node",
@@ -10,18 +12,17 @@
     "noUnusedParameters": true,
     "outDir": "dist",
     "pretty": true,
-    "removeComments": true,
     "sourceMap": false,
     "strictNullChecks": true,
     "suppressImplicitAnyIndexErrors": true,
     "target": "es5",
     "types": ["node"]
   },
   "include": [
-    "src/**/*"
+    "src/**/*.ts"
   ],
   "exclude": [
     "node_modules",
-    "src/__tests__/**/*"
+    "src/**/*.test.ts"
   ]
 }