fix: update deps, keywords, repo, and description in package.json

package.json

@@ -1,13 +1,16 @@
 {
   "name": "ember-shadow-dom",
   "version": "0.1.0",
-  "description": "The default blueprint for ember-cli addons.",
+  "description": "Write templates for your components inside of a Shadow DOM root.",
   "keywords": [
-    "ember-addon"
+    "ember-addon",
+    "shadow dom",
+    "shadow root",
+    "style encapsulation"
   ],
-  "repository": "",
+  "repository": "https://github.com/knownasilya/ember-shadow-dom",
   "license": "MIT",
-  "author": "",
+  "author": "Ilya Radchenko <knownasilya@gmail.com>",
   "directories": {
     "doc": "doc",
     "test": "tests"
@@ -28,7 +31,6 @@
   "devDependencies": {
     "@ember/optional-features": "^0.6.3",
     "broccoli-asset-rev": "^2.7.0",
-    "ember-ajax": "^3.1.0",
     "ember-cli": "~3.5.0",
     "ember-cli-dependency-checker": "^3.0.0",
     "ember-cli-eslint": "^4.2.3",