Repository has been move to the ethereumjs organization, update package.json

Author: axic

package.json

@@ -12,7 +12,7 @@
   },
   "repository": {
     "type": "git",
-    "url": "https://github.com/axic/ethereumjs-wallet.git"
+    "url": "https://github.com/ethereumjs/ethereumjs-wallet.git"
   },
   "keywords": [
     "ethereum",
@@ -22,9 +22,9 @@
   "author": "Alex Beregszaszi <[email protected]>",
   "license": "MIT",
   "bugs": {
-    "url": "https://github.com/axic/ethereumjs-wallet/issues"
+    "url": "https://github.com/ethereumjs/ethereumjs-wallet/issues"
   },
-  "homepage": "https://github.com/axic/ethereumjs-wallet",
+  "homepage": "https://github.com/ethereumjs/ethereumjs-wallet",
   "dependencies": {
     "aes-js": "^0.2.3",
     "bs58check": "^1.0.8",