feat: use cross-fetch instead of XMLHttpRequest (#15)

* feat: use axios instead of XMLHttpRequest to handle redirects

* bump version to publish dev version

* refactor: replace axios with cross-fetch

* style: remove some trailing commas

* chore: fix trailing comma auto-format

.prettierrc

@@ -1,6 +1,5 @@
 {
   "jsxBracketSameLine": false,
-  "trailingComma": "all",
   "tabWidth": 2,
   "printWidth": 80,
   "singleQuote": true,

package.json

@@ -1,24 +1,21 @@
 {
   "name": "web-did-resolver",
-  "version": "1.0.1",
+  "version": "1.0.2-dev.0",
   "description": "Resolve DID documents from an https domain",
   "main": "lib/resolver.js",
   "types": "lib/resolver.d.ts",
   "author": "Mike Xu <mike.xu@consensys.net>",
   "license": "Apache-2.0",
   "dependencies": {
-    "did-resolver": "1.0.0",
-    "xmlhttprequest": "^1.8.0"
+    "cross-fetch": "^3.0.4",
+    "did-resolver": "1.0.0"
   },
   "scripts": {
     "build": "tsc",
     "test": "jest",
     "dev": "tsc --watch",
     "format": "prettier"
   },
-  "browser": {
-    "xmlhttprequest": false
-  },
   "devDependencies": {
     "@types/jest": "^23.3.10",
     "jest": "^23.6.0",
@@ -28,8 +25,7 @@
     "tslint": "^5.12.0",
     "tslint-config-prettier": "^1.17.0",
     "tslint-eslint-rules": "^5.4.0",
-    "typescript": "^3.2.2",
-    "xhr-mock": "^2.4.1"
+    "typescript": "^3.2.2"
   },
   "jest": {
     "transform": {