Add bugs, author etc info to package.json

package.json

@@ -1,13 +1,20 @@
 {
   "name": "unexpected-react-shallow",
   "version": "0.1.0",
+  "description": "Unexpected plugin for React shallow renderer",
+  "keywords": [
+   "unexpected",
+   "react",
+   "plugin",
+   "assertion",
+   "shallow renderer"
+  ],
   "scripts": {
     "cover": "istanbul cover _mocha -- -u exports --compilers js:babel/register tests",
     "lint": "eslint .",
     "test": "mocha --compilers js:babel/register tests",
-    "coveralls":"istanbul cover ./node_modules/mocha/bin/_mocha --report lcovonly -- --compilers js:babel/register tests && cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js && rm -rf ./coverage || true"
+    "coveralls": "istanbul cover ./node_modules/mocha/bin/_mocha --report lcovonly -- --compilers js:babel/register tests && cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js && rm -rf ./coverage || true"
   },
-  "main": "src/unexpected-react-shallow.js",
   "devDependencies": {
     "babel": "^5.8.21",
     "babel-eslint": "^4.0.7",
@@ -23,7 +30,18 @@
     "array-changes": "^1.0.3",
     "magicpen-prism": "^2.2.0"
   },
-  "repository": "bruderstein/unexpected-react-shallow.git",
+  "peerDependencies": {
+      "unexpected": "^8.0.0 || ^9.0.0"
+  },
+  "author": "Dave Brotherstone <davegb@pobox.com>",
+  "repository": {
+      "type": "git",
+      "url": "https//github.com/bruderstein/unexpected-react-shallow.git"
+  },
+  "bugs": {
+      "url": "https://github.com/bruderstein/unexpected-react-shallow/issues"
+  },
+  "main": "src/unexpected-react-shallow.js",
   "files": [
     "src",
     "README.md",